631256120475532 has 24 divisors (see below), whose sum is σ = 1109759356087200. Its totient is φ = 314182607894016.

The previous prime is 631256120475529. The next prime is 631256120475551. The reversal of 631256120475532 is 235574021652136.

It is a self number, because there is not a number n which added to its sum of digits gives 631256120475532.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69356293 + ... + 77928220.

It is an arithmetic number, because the mean of its divisors is an integer number (46239973170300).

Almost surely, 2^{631256120475532} is an apocalyptic number.

It is an amenable number.

631256120475532 is a deficient number, since it is larger than the sum of its proper divisors (478503235611668).

631256120475532 is a wasteful number, since it uses less digits than its factorization.

631256120475532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147289425 (or 147289423 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 52.

The spelling of 631256120475532 in words is "six hundred thirty-one trillion, two hundred fifty-six billion, one hundred twenty million, four hundred seventy-five thousand, five hundred thirty-two".