631229368 has 48 divisors (see below), whose sum is σ = 1501961400. Its totient is φ = 245931840.

The previous prime is 631229351. The next prime is 631229429. The reversal of 631229368 is 863922136.

It is a self number, because there is not a number n which added to its sum of digits gives 631229368.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68883 + ... + 77506.

Almost surely, 2^631229368 is an apocalyptic number.

It is an amenable number.

631229368 is an abundant number, since it is smaller than the sum of its proper divisors (870732032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631229368 is a wasteful number, since it uses less digits than its factorization.

631229368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146420 (or 146409 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 631229368 is about 25124.2784573010. The cubic root of 631229368 is about 857.8191398517.

The spelling of 631229368 in words is "six hundred thirty-one million, two hundred twenty-nine thousand, three hundred sixty-eight".