631621324 has 12 divisors (see below), whose sum is σ = 1131043144. Its totient is φ = 308466144.

The previous prime is 631621307. The next prime is 631621343. The reversal of 631621324 is 423126136.

631621324 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 631621292 and 631621301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1835937 + ... + 1836280.

Almost surely, 2^631621324 is an apocalyptic number.

It is an amenable number.

631621324 is a deficient number, since it is larger than the sum of its proper divisors (499421820).

631621324 is a wasteful number, since it uses less digits than its factorization.

631621324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672264 (or 3672262 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 631621324 is about 25132.0775902033. The cubic root of 631621324 is about 857.9966547179.

The spelling of 631621324 in words is "six hundred thirty-one million, six hundred twenty-one thousand, three hundred twenty-four".