631071132856 has 16 divisors (see below), whose sum is σ = 1187296803000. Its totient is φ = 314458652064.

The previous prime is 631071132833. The next prime is 631071132859. The reversal of 631071132856 is 658231170136.

631071132856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631071132859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134611806 + ... + 134616493.

Almost surely, 2^631071132856 is an apocalyptic number.

It is an amenable number.

631071132856 is a deficient number, since it is larger than the sum of its proper divisors (556225670144).

631071132856 is a wasteful number, since it uses less digits than its factorization.

631071132856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269228598 (or 269228594 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 631071132856 in words is "six hundred thirty-one billion, seventy-one million, one hundred thirty-two thousand, eight hundred fifty-six".