31984772 has 6 divisors (see below), whose sum is σ = 55973358. Its totient is φ = 15992384.

The previous prime is 31984753. The next prime is 31984783. The reversal of 31984772 is 27748913.

It can be written as a sum of positive squares in only one way, i.e., 28472896 + 3511876 = 5336^2 + 1874^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3998093 + ... + 3998100.

It is an arithmetic number, because the mean of its divisors is an integer number (9328893).

Almost surely, 2^31984772 is an apocalyptic number.

It is an amenable number.

31984772 is a deficient number, since it is larger than the sum of its proper divisors (23988586).

31984772 is a wasteful number, since it uses less digits than its factorization.

31984772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7996197 (or 7996195 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 31984772 is about 5655.5081115670. The cubic root of 31984772 is about 317.4298421048.

The spelling of 31984772 in words is "thirty-one million, nine hundred eighty-four thousand, seven hundred seventy-two".