3131972 has 6 divisors (see below), whose sum is σ = 5480958. Its totient is φ = 1565984.

The previous prime is 3131951. The next prime is 3131977. The reversal of 3131972 is 2791313.

3131972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2119936 + 1012036 = 1456^2 + 1006^2 .

It is not an unprimeable number, because it can be changed into a prime (3131977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391493 + ... + 391500.

It is an arithmetic number, because the mean of its divisors is an integer number (913493).

Almost surely, 2^3131972 is an apocalyptic number.

It is an amenable number.

3131972 is a deficient number, since it is larger than the sum of its proper divisors (2348986).

3131972 is a wasteful number, since it uses less digits than its factorization.

3131972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782997 (or 782995 counting only the distinct ones).

The product of its digits is 1134, while the sum is 26.

The square root of 3131972 is about 1769.7378336918. The cubic root of 3131972 is about 146.3095328284.

The spelling of 3131972 in words is "three million, one hundred thirty-one thousand, nine hundred seventy-two".