31680972086 has 8 divisors (see below), whose sum is σ = 47648862624. Its totient is φ = 15798017880.

The previous prime is 31680972079. The next prime is 31680972101. The reversal of 31680972086 is 68027908613.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×31680972086² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21233150 + ... + 21234641.

It is an arithmetic number, because the mean of its divisors is an integer number (5956107828).

Almost surely, 2^31680972086 is an apocalyptic number.

31680972086 is a deficient number, since it is larger than the sum of its proper divisors (15967890538).

31680972086 is a wasteful number, since it uses less digits than its factorization.

31680972086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42468166.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 31680972086 in words is "thirty-one billion, six hundred eighty million, nine hundred seventy-two thousand, eighty-six".