631043264 has 56 divisors (see below), whose sum is σ = 1329446160. Its totient is φ = 296165376.

The previous prime is 631043261. The next prime is 631043293. The reversal of 631043264 is 462340136.

It is not an unprimeable number, because it can be changed into a prime (631043261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673004 + ... + 673940.

It is an arithmetic number, because the mean of its divisors is an integer number (23740110).

Almost surely, 2^631043264 is an apocalyptic number.

631043264 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631043264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664723080).

631043264 is an abundant number, since it is smaller than the sum of its proper divisors (698402896).

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

631043264 is a wasteful number, since it uses less digits than its factorization.

631043264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585 (or 1575 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 631043264 is about 25120.5745157232. The cubic root of 631043264 is about 857.7348285733.

The spelling of 631043264 in words is "six hundred thirty-one million, forty-three thousand, two hundred sixty-four".