31148987234568 has 48 divisors (see below), whose sum is σ = 90586340430480. Its totient is φ = 8899710638112.

The previous prime is 31148987234551. The next prime is 31148987234579. The reversal of 31148987234568 is 86543278984113.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13243615846 + ... + 13243618197.

It is an arithmetic number, because the mean of its divisors is an integer number (1887215425635).

Almost surely, 2^{31148987234568} is an apocalyptic number.

It is an amenable number.

31148987234568 is an abundant number, since it is smaller than the sum of its proper divisors (59437353195912).

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

31148987234568 is a wasteful number, since it uses less digits than its factorization.

31148987234568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26487234066 (or 26487234055 counting only the distinct ones).

The product of its digits is 278691840, while the sum is 69.

The spelling of 31148987234568 in words is "thirty-one trillion, one hundred forty-eight billion, nine hundred eighty-seven million, two hundred thirty-four thousand, five hundred sixty-eight".