30931724664 has 48 divisors (see below), whose sum is σ = 86876145720. Its totient is φ = 10310574240.

The previous prime is 30931724657. The next prime is 30931724693. The reversal of 30931724664 is 46642713903.

30931724664 is a `hidden beast` number, since 30 + 9 + 317 + 246 + 64 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7953747 + ... + 7957634.

Almost surely, 2^30931724664 is an apocalyptic number.

It is an amenable number.

30931724664 is an abundant number, since it is smaller than the sum of its proper divisors (55944421056).

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

30931724664 is a wasteful number, since it uses less digits than its factorization.

30931724664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15911402 (or 15911386 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 30931724664 in words is "thirty billion, nine hundred thirty-one million, seven hundred twenty-four thousand, six hundred sixty-four".