631740312 has 48 divisors (see below), whose sum is σ = 1955388240. Its totient is φ = 180497088.

The previous prime is 631740293. The next prime is 631740359. The reversal of 631740312 is 213047136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 626223 + ... + 627230.

It is an arithmetic number, because the mean of its divisors is an integer number (40737255).

Almost surely, 2^631740312 is an apocalyptic number.

It is an amenable number.

631740312 is an abundant number, since it is smaller than the sum of its proper divisors (1323647928).

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

631740312 is a wasteful number, since it uses less digits than its factorization.

631740312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253472 (or 1253465 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 631740312 is about 25134.4447322792. Note that the first 3 decimals coincide. The cubic root of 631740312 is about 858.0505292425.

Adding to 631740312 its reverse (213047136), we get a palindrome (844787448).

The spelling of 631740312 in words is "six hundred thirty-one million, seven hundred forty thousand, three hundred twelve".