631363872 has 48 divisors (see below), whose sum is σ = 1714487040. Its totient is φ = 203196672.

The previous prime is 631363871. The next prime is 631363891. The reversal of 631363872 is 278363136.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 631363872.

It is not an unprimeable number, because it can be changed into a prime (631363871) 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, 110608 + ... + 116175.

It is an arithmetic number, because the mean of its divisors is an integer number (35718480).

Almost surely, 2^631363872 is an apocalyptic number.

It is an amenable number.

631363872 is an abundant number, since it is smaller than the sum of its proper divisors (1083123168).

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

631363872 is a wasteful number, since it uses less digits than its factorization.

631363872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226825 (or 226817 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 631363872 is about 25126.9550881120. The cubic root of 631363872 is about 857.8800643044.

The spelling of 631363872 in words is "six hundred thirty-one million, three hundred sixty-three thousand, eight hundred seventy-two".