631322897994 has 48 divisors (see below), whose sum is σ = 1412182796544. Its totient is φ = 203624884800.

The previous prime is 631322897981. The next prime is 631322898001. The reversal of 631322897994 is 499798223136.

631322897994 is a `hidden beast` number, since 6 + 313 + 228 + 9 + 7 + 9 + 94 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4253209 + ... + 4399139.

It is an arithmetic number, because the mean of its divisors is an integer number (29420474928).

Almost surely, 2^631322897994 is an apocalyptic number.

631322897994 is an abundant number, since it is smaller than the sum of its proper divisors (780859898550).

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

631322897994 is a wasteful number, since it uses less digits than its factorization.

631322897994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153723 (or 153720 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

The spelling of 631322897994 in words is "six hundred thirty-one billion, three hundred twenty-two million, eight hundred ninety-seven thousand, nine hundred ninety-four".