31256462113 has 2 divisors, whose sum is σ = 31256462114. Its totient is φ = 31256462112.

The previous prime is 31256462093. The next prime is 31256462177. The reversal of 31256462113 is 31126465213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30669466129 + 586995984 = 175127^2 + 24228^2 .

It is a cyclic number.

It is not a de Polignac number, because 31256462113 - 2²¹ = 31254364961 is a prime.

It is not a weakly prime, because it can be changed into another prime (31256466113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15628231056 + 15628231057.

It is an arithmetic number, because the mean of its divisors is an integer number (15628231057).

Almost surely, 2^31256462113 is an apocalyptic number.

It is an amenable number.

31256462113 is a deficient number, since it is larger than the sum of its proper divisors (1).

31256462113 is an equidigital number, since it uses as much as digits as its factorization.

31256462113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The spelling of 31256462113 in words is "thirty-one billion, two hundred fifty-six million, four hundred sixty-two thousand, one hundred thirteen".