31 may refer to:
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31 (number)
31 (thirty-one) is the natural number following thirty, 30 and preceding 32 (number), 32. It is a prime number.
In mathematics
31 is the 11th prime number. It is a superprime and a Self number#Self primes, self prime (after 3, 5, and 7), as no ...
Years
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31 BC
__NOTOC__
Year 31 BC was either a common year starting on Tuesday, Wednesday or Thursday or a leap year starting on Tuesday or Wednesday (link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for ...
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AD 31
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1931
Events
January
* January 2 – South Dakota native Ernest Lawrence invents the cyclotron, used to accelerate particles to study nuclear physics.
* January 4 – German pilot Elly Beinhorn begins her flight to Africa.
* January 22 – Sir I ...
CE ('31)
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2031
The 2030s (pronounced "twenty-thirties"; shortened to the '30s) is the next decade in the Gregorian calendar that will begin on 1 January 2030, and will end on 31 December 2039.
Plans and goals
* NASA plans to execute a crewed mission to Mars be ...
CE ('31)
Music
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''Thirty One'' (Jana Kramer album), 2015
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''Thirty One'' (Jarryd James album), 2015
* "Thirty One", a song by Karma to Burn from the album ''
Wild, Wonderful Purgatory'', 1999
Film and television
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''31'' (film), a 2016 horror film
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31 (Kazakhstan)
Channel 31 is a Kazakh nationwide broadcast television station that is based in Almaty, Kazakhstan and are owned and operated by CTC Media anNational Media Group
The channel was launched on 24 October 1992, and during its official start, it h ...
, a television channel
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31 Digital
31 may refer to:
* 31 (number)
Years
* 31 BC
* AD 31
* 1931 CE ('31)
* 2031 CE ('31)
Music
* ''Thirty One'' (Jana Kramer album), 2015
* ''Thirty One'' (Jarryd James album), 2015
* "Thirty One", a song by Karma to Burn from the album ''W ...
, an Australian video on demand service, and before 2017 an Australian community television channel from
Brisbane, Queensland.
Other uses
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Thirty-one (card game)
See also
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Channel 31 (disambiguation)
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Highway 31 (disambiguation)
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Section 31 (disambiguation)
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List of highways numbered 31
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