31113013099 has 16 divisors (see below), whose sum is σ = 36968011200. Its totient is φ = 26165106240.

The previous prime is 31113013093. The next prime is 31113013147. The reversal of 31113013099 is 99031031113.

It is a happy number.

It is not a de Polignac number, because 31113013099 - 2¹¹ = 31113011051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31113013099.

It is not an unprimeable number, because it can be changed into a prime (31113013093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837562 + ... + 873919.

It is an arithmetic number, because the mean of its divisors is an integer number (2310500700).

Almost surely, 2^31113013099 is an apocalyptic number.

31113013099 is a deficient number, since it is larger than the sum of its proper divisors (5854998101).

31113013099 is an equidigital number, since it uses as much as digits as its factorization.

31113013099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711555 (or 1711541 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 31.

The spelling of 31113013099 in words is "thirty-one billion, one hundred thirteen million, thirteen thousand, ninety-nine".