31960144 has 20 divisors (see below), whose sum is σ = 62195796. Its totient is φ = 15909632.

The previous prime is 31960127. The next prime is 31960169. The reversal of 31960144 is 44106913.

It can be written as a sum of positive squares in 2 ways, for example, as 8340544 + 23619600 = 2888^2 + 4860^2 .

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 3 ways as a sum of consecutive naturals, for example, 559 + ... + 8014.

Almost surely, 2^31960144 is an apocalyptic number.

It is an amenable number.

31960144 is a deficient number, since it is larger than the sum of its proper divisors (30235652).

31960144 is a wasteful number, since it uses less digits than its factorization.

31960144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8814 (or 8808 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 31960144 is about 5653.3303459112. The cubic root of 31960144 is about 317.3483484331.

The spelling of 31960144 in words is "thirty-one million, nine hundred sixty thousand, one hundred forty-four".