31040668 has 24 divisors (see below), whose sum is σ = 55883520. Its totient is φ = 15078000.

The previous prime is 31040651. The next prime is 31040671. The reversal of 31040668 is 86604013.

It is a congruent number.

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, 42813 + ... + 43531.

It is an arithmetic number, because the mean of its divisors is an integer number (2328480).

Almost surely, 2^31040668 is an apocalyptic number.

It is an amenable number.

31040668 is a deficient number, since it is larger than the sum of its proper divisors (24842852).

31040668 is a wasteful number, since it uses less digits than its factorization.

31040668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 31040668 is about 5571.4152600574. The cubic root of 31040668 is about 314.2753747484.

The spelling of 31040668 in words is "thirty-one million, forty thousand, six hundred sixty-eight".