631012316 has 48 divisors (see below), whose sum is σ = 1264757760. Its totient is φ = 272832000.

The previous prime is 631012303. The next prime is 631012373. The reversal of 631012316 is 613210136.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 631012291 and 631012300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76556 + ... + 84396.

It is an arithmetic number, because the mean of its divisors is an integer number (26349120).

Almost surely, 2^631012316 is an apocalyptic number.

It is an amenable number.

631012316 is an abundant number, since it is smaller than the sum of its proper divisors (633745444).

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

631012316 is a wasteful number, since it uses less digits than its factorization.

631012316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7946 (or 7944 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 631012316 is about 25119.9585190740. The cubic root of 631012316 is about 857.7208064965.

The spelling of 631012316 in words is "six hundred thirty-one million, twelve thousand, three hundred sixteen".