631532304 has 120 divisors (see below), whose sum is σ = 1969170840. Its totient is φ = 187600896.

The previous prime is 631532299. The next prime is 631532323. The reversal of 631532304 is 403235136.

It is a happy number.

631532304 is a `hidden beast` number, since 631 + 5 + 3 + 23 + 0 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 55532304 + 576000000 = 7452^2 + 24000^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48472 + ... + 60104.

It is an arithmetic number, because the mean of its divisors is an integer number (16409757).

Almost surely, 2^631532304 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 631532304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984585420).

631532304 is an abundant number, since it is smaller than the sum of its proper divisors (1337638536).

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

631532304 is a wasteful number, since it uses less digits than its factorization.

631532304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11689 (or 11680 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 631532304 is about 25130.3064844025. The cubic root of 631532304 is about 857.9563444624.

The spelling of 631532304 in words is "six hundred thirty-one million, five hundred thirty-two thousand, three hundred four".