631394071512 has 32 divisors (see below), whose sum is σ = 1671337249200. Its totient is φ = 198084414464.

The previous prime is 631394071507. The next prime is 631394071603. The reversal of 631394071512 is 215170493136.

It is a super-2 number, since 2×631394071512² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 773766837 + ... + 773767652.

Almost surely, 2^631394071512 is an apocalyptic number.

It is an amenable number.

631394071512 is an abundant number, since it is smaller than the sum of its proper divisors (1039943177688).

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

631394071512 is a wasteful number, since it uses less digits than its factorization.

631394071512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547534515 (or 1547534511 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 631394071512 in words is "six hundred thirty-one billion, three hundred ninety-four million, seventy-one thousand, five hundred twelve".