631651204 has 12 divisors (see below), whose sum is σ = 1143506700. Its totient is φ = 304935008.

The previous prime is 631651193. The next prime is 631651211. The reversal of 631651204 is 402156136.

It can be written as a sum of positive squares in 2 ways, for example, as 311169600 + 320481604 = 17640^2 + 17902^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2722519 + ... + 2722750.

It is an arithmetic number, because the mean of its divisors is an integer number (95292225).

Almost surely, 2^631651204 is an apocalyptic number.

It is an amenable number.

631651204 is a deficient number, since it is larger than the sum of its proper divisors (511855496).

631651204 is a wasteful number, since it uses less digits than its factorization.

631651204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5445302 (or 5445300 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 631651204 is about 25132.6720425823. The cubic root of 631651204 is about 858.0101842040.

The spelling of 631651204 in words is "six hundred thirty-one million, six hundred fifty-one thousand, two hundred four".