31815714680 has 16 divisors (see below), whose sum is σ = 71585358120. Its totient is φ = 12726285856.

The previous prime is 31815714617. The next prime is 31815714683. The reversal of 31815714680 is 8641751813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31815714683) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 397696394 + ... + 397696473.

Almost surely, 2^31815714680 is an apocalyptic number.

It is an amenable number.

31815714680 is an abundant number, since it is smaller than the sum of its proper divisors (39769643440).

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

31815714680 is a wasteful number, since it uses less digits than its factorization.

31815714680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795392878 (or 795392874 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The spelling of 31815714680 in words is "thirty-one billion, eight hundred fifteen million, seven hundred fourteen thousand, six hundred eighty".