631307392 has 16 divisors (see below), whose sum is σ = 1257682950. Its totient is φ = 315653632.

The previous prime is 631307389. The next prime is 631307441. The reversal of 631307392 is 293703136.

It can be written as a sum of positive squares in only one way, i.e., 629809216 + 1498176 = 25096^2 + 1224^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2465917 + ... + 2466172.

Almost surely, 2^631307392 is an apocalyptic number.

It is an amenable number.

631307392 is a deficient number, since it is larger than the sum of its proper divisors (626375558).

631307392 is an equidigital number, since it uses as much as digits as its factorization.

631307392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4932103 (or 4932091 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 34.

The square root of 631307392 is about 25125.8311703315. The cubic root of 631307392 is about 857.8544823788.

The spelling of 631307392 in words is "six hundred thirty-one million, three hundred seven thousand, three hundred ninety-two".