31696415387864 has 16 divisors (see below), whose sum is σ = 59430859093320. Its totient is φ = 15848186296320.

The previous prime is 31696415387837. The next prime is 31696415387881. The reversal of 31696415387864 is 46878351469613.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4874072 + ... + 9335384.

Almost surely, 2^{31696415387864} is an apocalyptic number.

It is an amenable number.

31696415387864 is a deficient number, since it is larger than the sum of its proper divisors (27734443705456).

31696415387864 is a wasteful number, since it uses less digits than its factorization.

31696415387864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5349410 (or 5349406 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 71.

The spelling of 31696415387864 in words is "thirty-one trillion, six hundred ninety-six billion, four hundred fifteen million, three hundred eighty-seven thousand, eight hundred sixty-four".