631890512 has 40 divisors (see below), whose sum is σ = 1381652640. Its totient is φ = 277316480.

The previous prime is 631890509. The next prime is 631890529. The reversal of 631890512 is 215098136.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56798 + ... + 67005.

It is an arithmetic number, because the mean of its divisors is an integer number (34541316).

Almost surely, 2^631890512 is an apocalyptic number.

It is an amenable number.

631890512 is an abundant number, since it is smaller than the sum of its proper divisors (749762128).

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

631890512 is a wasteful number, since it uses less digits than its factorization.

631890512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123851 (or 123845 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 631890512 is about 25137.4324862345. The cubic root of 631890512 is about 858.1185260520.

The spelling of 631890512 in words is "six hundred thirty-one million, eight hundred ninety thousand, five hundred twelve".