31

Summary

31 is a positive integer^[1]. 31 has Wikipedia articles in 29 language editions, a strong signal of global cultural recognition.^[2]

Key Facts

• 31's instance of is recorded as positive integer^[3].
• 31's instance of is recorded as prime number^[4].
• 31's instance of is recorded as Mersenne prime^[5].
• 31's instance of is recorded as odd number^[6].
• 31's instance of is recorded as centered triangular number^[7].
• 31's instance of is recorded as centered decagonal number^[8].
• 31's instance of is recorded as centered pentagonal number^[9].
• 31's instance of is recorded as highly touchable number^[10].
• 31's instance of is recorded as Mersenne number^[11].
• 31's instance of is recorded as primorial prime^[12].
• 31's instance of is recorded as Euclid number^[13].
• 31 followed 30^[14].
• 31 was followed by 32^[15].
• 31's Commons category is recorded as 31 (number)^[16].
• 31's Unicode character is recorded as ㉛^[17].
• 31's numeric value is recorded as {'amount': '+31'}^[18].
• 31's code is recorded as ௩௰௧^[19].
• 31's code is recorded as ௩௧^[20].
• 31's code is recorded as XXXI^[21].
• 31's code is recorded as 𒌍𒐕^[22].
• 31's code is recorded as 11111^[23].
• 31's code is recorded as 1011^[24].
• 31's code is recorded as 133^[25].
• 31's code is recorded as 111^[26].
• 31's code is recorded as 51^[27].

Body

Definition and Type

Recorded instance of include positive integer^[3], prime number^[4], Mersenne prime^[5], odd number^[6], centered triangular number^[7], and centered decagonal number^[8].

Why It Matters

31 has Wikipedia articles in 29 language editions, a strong signal of global cultural recognition.^[2] 31 is known by 43 alternative names across languages and contexts.^[28]