31317325998 has 48 divisors (see below), whose sum is σ = 73324906704. Its totient is φ = 8890801920.

The previous prime is 31317325961. The next prime is 31317326009. The reversal of 31317325998 is 89952371313.

It is a self number, because there is not a number n which added to its sum of digits gives 31317325998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 293083 + ... + 385398.

It is an arithmetic number, because the mean of its divisors is an integer number (1527602223).

Almost surely, 2^31317325998 is an apocalyptic number.

31317325998 is an abundant number, since it is smaller than the sum of its proper divisors (42007580706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31317325998 is a wasteful number, since it uses less digits than its factorization.

31317325998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678657 (or 678650 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 51.

The spelling of 31317325998 in words is "thirty-one billion, three hundred seventeen million, three hundred twenty-five thousand, nine hundred ninety-eight".