631315876 has 27 divisors (see below), whose sum is σ = 1175204289. Its totient is φ = 296687808.

The previous prime is 631315843. The next prime is 631315879. The reversal of 631315876 is 678513136.

It is a happy number.

The square root of 631315876 is 25126.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 491508900 + 139806976 = 22170^2 + 11824^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631315879) 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 8 ways as a sum of consecutive naturals, for example, 853915 + ... + 854653.

Almost surely, 2^631315876 is an apocalyptic number.

631315876 is the 25126-th square number.

It is an amenable number.

631315876 is a deficient number, since it is larger than the sum of its proper divisors (543888413).

631315876 is an equidigital number, since it uses as much as digits as its factorization.

631315876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516 (or 758 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The cubic root of 631315876 is about 857.8583252003.

The spelling of 631315876 in words is "six hundred thirty-one million, three hundred fifteen thousand, eight hundred seventy-six".