631290912 has 144 divisors (see below), whose sum is σ = 1973153952. Its totient is φ = 176117760.

The previous prime is 631290901. The next prime is 631290943. The reversal of 631290912 is 219092136.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200712 + ... + 203832.

It is an arithmetic number, because the mean of its divisors is an integer number (13702458).

Almost surely, 2^631290912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631290912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (986576976).

631290912 is an abundant number, since it is smaller than the sum of its proper divisors (1341863040).

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

631290912 is a wasteful number, since it uses less digits than its factorization.

631290912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191 (or 3176 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 631290912 is about 25125.5032188412. The cubic root of 631290912 is about 857.8470176766.

The spelling of 631290912 in words is "six hundred thirty-one million, two hundred ninety thousand, nine hundred twelve".