631312506960 has 80 divisors (see below), whose sum is σ = 1989151912320. Its totient is φ = 165590161920.

The previous prime is 631312506863. The next prime is 631312506961. The reversal of 631312506960 is 69605213136.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631312506961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21546580 + ... + 21575859.

It is an arithmetic number, because the mean of its divisors is an integer number (24864398904).

Almost surely, 2^631312506960 is an apocalyptic number.

631312506960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

631312506960 is an abundant number, since it is smaller than the sum of its proper divisors (1357839405360).

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

631312506960 is a wasteful number, since it uses less digits than its factorization.

631312506960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43122516 (or 43122510 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 42.

The spelling of 631312506960 in words is "six hundred thirty-one billion, three hundred twelve million, five hundred six thousand, nine hundred sixty".