631616356 has 12 divisors (see below), whose sum is σ = 1263232768. Its totient is φ = 270692712.

The previous prime is 631616353. The next prime is 631616389. The reversal of 631616356 is 653616136.

631616356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

631616356 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (631616353) 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, 11278836 + ... + 11278891.

Almost surely, 2^631616356 is an apocalyptic number.

It is an amenable number.

631616356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

631616356 is a wasteful number, since it uses less digits than its factorization.

631616356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22557738 (or 22557736 counting only the distinct ones).

The product of its digits is 58320, while the sum is 37.

The square root of 631616356 is about 25131.9787521795. The cubic root of 631616356 is about 857.9944051957.

The spelling of 631616356 in words is "six hundred thirty-one million, six hundred sixteen thousand, three hundred fifty-six".