631884713 has 16 divisors (see below), whose sum is σ = 676544400. Its totient is φ = 588097536.

The previous prime is 631884707. The next prime is 631884733. The reversal of 631884713 is 317488136.

It can be written as a sum of positive squares in 8 ways, for example, as 110082064 + 521802649 = 10492^2 + 22843^2 .

It is a cyclic number.

It is not a de Polignac number, because 631884713 - 2⁴ = 631884697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631884703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 792431 + ... + 793227.

It is an arithmetic number, because the mean of its divisors is an integer number (42284025).

Almost surely, 2^631884713 is an apocalyptic number.

It is an amenable number.

631884713 is a deficient number, since it is larger than the sum of its proper divisors (44659687).

631884713 is a wasteful number, since it uses less digits than its factorization.

631884713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276.

The product of its digits is 96768, while the sum is 41.

The square root of 631884713 is about 25137.3171400609. The cubic root of 631884713 is about 858.1159009957.

The spelling of 631884713 in words is "six hundred thirty-one million, eight hundred eighty-four thousand, seven hundred thirteen".