31693086 has 16 divisors (see below), whose sum is σ = 70429200. Its totient is φ = 10564344.

The previous prime is 31693061. The next prime is 31693091. The reversal of 31693086 is 68039613.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31693086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293401 + ... + 293508.

It is an arithmetic number, because the mean of its divisors is an integer number (4401825).

Almost surely, 2^31693086 is an apocalyptic number.

31693086 is an abundant number, since it is smaller than the sum of its proper divisors (38736114).

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

31693086 is a wasteful number, since it uses less digits than its factorization.

31693086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586920 (or 586914 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 31693086 is about 5629.6612686733. The cubic root of 31693086 is about 316.4619571983.

The spelling of 31693086 in words is "thirty-one million, six hundred ninety-three thousand, eighty-six".