31690806975 has 36 divisors (see below), whose sum is σ = 56789496192. Its totient is φ = 16893504000.

The previous prime is 31690806919. The next prime is 31690806991. The reversal of 31690806975 is 57960809613.

It is not a de Polignac number, because 31690806975 - 2¹¹ = 31690804927 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 441615 + ... + 508335.

Almost surely, 2^31690806975 is an apocalyptic number.

31690806975 is a deficient number, since it is larger than the sum of its proper divisors (25098689217).

31690806975 is a wasteful number, since it uses less digits than its factorization.

31690806975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68848 (or 68840 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 31690806975 in words is "thirty-one billion, six hundred ninety million, eight hundred six thousand, nine hundred seventy-five".