12940642931 has 2 divisors, whose sum is σ = 12940642932. Its totient is φ = 12940642930.

The previous prime is 12940642921. The next prime is 12940642969. The reversal of 12940642931 is 13924604921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12940642931 - 2¹⁰ = 12940641907 is a prime.

It is a super-2 number, since 2×12940642931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12940642921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6470321465 + 6470321466.

It is an arithmetic number, because the mean of its divisors is an integer number (6470321466).

Almost surely, 2^12940642931 is an apocalyptic number.

12940642931 is a deficient number, since it is larger than the sum of its proper divisors (1).

12940642931 is an equidigital number, since it uses as much as digits as its factorization.

12940642931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 12940642931 in words is "twelve billion, nine hundred forty million, six hundred forty-two thousand, nine hundred thirty-one".