631332923 has 16 divisors (see below), whose sum is σ = 705551616. Its totient is φ = 561163680.

The previous prime is 631332907. The next prime is 631332937. The reversal of 631332923 is 329233136.

It is a cyclic number.

It is not a de Polignac number, because 631332923 - 2⁴ = 631332907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 631332923.

It is not an unprimeable number, because it can be changed into a prime (631332983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31736 + ... + 47642.

It is an arithmetic number, because the mean of its divisors is an integer number (44096976).

Almost surely, 2^631332923 is an apocalyptic number.

631332923 is a deficient number, since it is larger than the sum of its proper divisors (74218693).

631332923 is a wasteful number, since it uses less digits than its factorization.

631332923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16034.

The product of its digits is 17496, while the sum is 32.

The square root of 631332923 is about 25126.3392279894. The cubic root of 631332923 is about 857.8660465221.

The spelling of 631332923 in words is "six hundred thirty-one million, three hundred thirty-two thousand, nine hundred twenty-three".