31692136 has 32 divisors (see below), whose sum is σ = 68120640. Its totient is φ = 13540608.

The previous prime is 31692121. The next prime is 31692163. The reversal of 31692136 is 63129613.

It is a junction number, because it is equal to n+sod(n) for n = 31692098 and 31692107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23595 + ... + 24901.

It is an arithmetic number, because the mean of its divisors is an integer number (2128770).

Almost surely, 2^31692136 is an apocalyptic number.

It is an amenable number.

31692136 is an abundant number, since it is smaller than the sum of its proper divisors (36428504).

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

31692136 is a wasteful number, since it uses less digits than its factorization.

31692136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753 (or 1749 counting only the distinct ones).

The product of its digits is 5832, while the sum is 31.

The square root of 31692136 is about 5629.5768935152. The cubic root of 31692136 is about 316.4587951852.

The spelling of 31692136 in words is "thirty-one million, six hundred ninety-two thousand, one hundred thirty-six".