631557032 has 16 divisors (see below), whose sum is σ = 1185620640. Its totient is φ = 315391536.

The previous prime is 631557011. The next prime is 631557049. The reversal of 631557032 is 230755136.

It is a self number, because there is not a number n which added to its sum of digits gives 631557032.

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, 41378 + ... + 54545.

It is an arithmetic number, because the mean of its divisors is an integer number (74101290).

Almost surely, 2^631557032 is an apocalyptic number.

It is an amenable number.

631557032 is a deficient number, since it is larger than the sum of its proper divisors (554063608).

631557032 is a wasteful number, since it uses less digits than its factorization.

631557032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96752 (or 96748 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 631557032 is about 25130.7984751778. The cubic root of 631557032 is about 857.9675422362.

The spelling of 631557032 in words is "six hundred thirty-one million, five hundred fifty-seven thousand, thirty-two".