31668036 has 24 divisors (see below), whose sum is σ = 75465600. Its totient is φ = 10331232.

The previous prime is 31668017. The next prime is 31668047. The reversal of 31668036 is 63086613.

It is a junction number, because it is equal to n+sod(n) for n = 31667988 and 31668006.

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, 27511 + ... + 28638.

It is an arithmetic number, because the mean of its divisors is an integer number (3144400).

Almost surely, 2^31668036 is an apocalyptic number.

It is an amenable number.

31668036 is an abundant number, since it is smaller than the sum of its proper divisors (43797564).

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

31668036 is a wasteful number, since it uses less digits than its factorization.

31668036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56203 (or 56201 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 31668036 is about 5627.4360058556. The cubic root of 31668036 is about 316.3785587612.

The spelling of 31668036 in words is "thirty-one million, six hundred sixty-eight thousand, thirty-six".