13056999931 has 2 divisors, whose sum is σ = 13056999932. Its totient is φ = 13056999930.

The previous prime is 13056999871. The next prime is 13056999941. The reversal of 13056999931 is 13999965031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13056999931 - 2²⁹ = 12520129019 is a prime.

It is a super-2 number, since 2×13056999931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13056999941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6528499965 + 6528499966.

It is an arithmetic number, because the mean of its divisors is an integer number (6528499966).

Almost surely, 2^13056999931 is an apocalyptic number.

13056999931 is a deficient number, since it is larger than the sum of its proper divisors (1).

13056999931 is an equidigital number, since it uses as much as digits as its factorization.

13056999931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1771470, while the sum is 55.

The spelling of 13056999931 in words is "thirteen billion, fifty-six million, nine hundred ninety-nine thousand, nine hundred thirty-one".