31692639356 has 24 divisors (see below), whose sum is σ = 64331331456. Its totient is φ = 13379834160.

The previous prime is 31692639353. The next prime is 31692639401. The reversal of 31692639356 is 65393629613.

It is a junction number, because it is equal to n+sod(n) for n = 31692639298 and 31692639307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31692639353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8444990 + ... + 8448741.

It is an arithmetic number, because the mean of its divisors is an integer number (2680472144).

Almost surely, 2^31692639356 is an apocalyptic number.

It is an amenable number.

31692639356 is an abundant number, since it is smaller than the sum of its proper divisors (32638692100).

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

31692639356 is a wasteful number, since it uses less digits than its factorization.

31692639356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16893809 (or 16893807 counting only the distinct ones).

The product of its digits is 4723920, while the sum is 53.

The spelling of 31692639356 in words is "thirty-one billion, six hundred ninety-two million, six hundred thirty-nine thousand, three hundred fifty-six".