631286980 has 24 divisors (see below), whose sum is σ = 1383342912. Its totient is φ = 241535712.

The previous prime is 631286941. The next prime is 631287023. The reversal of 631286980 is 89682136.

It is a super-2 number, since 2×631286980² = 797046502235040800, which contains 22 as substring.

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, 685722 + ... + 686641.

It is an arithmetic number, because the mean of its divisors is an integer number (57639288).

Almost surely, 2^631286980 is an apocalyptic number.

It is an amenable number.

631286980 is an abundant number, since it is smaller than the sum of its proper divisors (752055932).

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

631286980 is a wasteful number, since it uses less digits than its factorization.

631286980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372395 (or 1372393 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 631286980 is about 25125.4249715303. The cubic root of 631286980 is about 857.8452366375.

The spelling of 631286980 in words is "six hundred thirty-one million, two hundred eighty-six thousand, nine hundred eighty".