31317073504 has 48 divisors (see below), whose sum is σ = 64395248400. Its totient is φ = 14977073664.

The previous prime is 31317073499. The next prime is 31317073517. The reversal of 31317073504 is 40537071313.

It is a self number, because there is not a number n which added to its sum of digits gives 31317073504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154299 + ... + 294010.

It is an arithmetic number, because the mean of its divisors is an integer number (1341567675).

Almost surely, 2^31317073504 is an apocalyptic number.

It is an amenable number.

31317073504 is an abundant number, since it is smaller than the sum of its proper divisors (33078174896).

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

31317073504 is a wasteful number, since it uses less digits than its factorization.

31317073504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448415 (or 448407 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 34.

The spelling of 31317073504 in words is "thirty-one billion, three hundred seventeen million, seventy-three thousand, five hundred four".