31073972 has 12 divisors (see below), whose sum is σ = 54420576. Its totient is φ = 15525240.

The previous prime is 31073957. The next prime is 31074007. The reversal of 31073972 is 27937013.

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, 6113 + ... + 9975.

It is an arithmetic number, because the mean of its divisors is an integer number (4535048).

Almost surely, 2^31073972 is an apocalyptic number.

It is an amenable number.

31073972 is a deficient number, since it is larger than the sum of its proper divisors (23346604).

31073972 is a wasteful number, since it uses less digits than its factorization.

31073972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5878 (or 5876 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 31073972 is about 5574.4032864514. The cubic root of 31073972 is about 314.3877315018.

The spelling of 31073972 in words is "thirty-one million, seventy-three thousand, nine hundred seventy-two".