631216516 has 24 divisors (see below), whose sum is σ = 1267958720. Its totient is φ = 269337312.

The previous prime is 631216507. The next prime is 631216529. The reversal of 631216516 is 615612136.

631216516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 42810 + ... + 55633.

Almost surely, 2^631216516 is an apocalyptic number.

It is an amenable number.

631216516 is an abundant number, since it is smaller than the sum of its proper divisors (636742204).

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

631216516 is a wasteful number, since it uses less digits than its factorization.

631216516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98683 (or 98681 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 631216516 is about 25124.0226874599. The cubic root of 631216516 is about 857.8133180026.

The spelling of 631216516 in words is "six hundred thirty-one million, two hundred sixteen thousand, five hundred sixteen".