631681713 has 32 divisors (see below), whose sum is σ = 1009881600. Its totient is φ = 387929088.

The previous prime is 631681697. The next prime is 631681717. The reversal of 631681713 is 317186136.

631681713 is a `hidden beast` number, since 631 + 6 + 8 + 1 + 7 + 13 = 666.

631681713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 631681713 - 2⁴ = 631681697 is a prime.

It is a super-2 number, since 2×631681713² = 798043573077228738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (631681717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200968 + ... + 204086.

It is an arithmetic number, because the mean of its divisors is an integer number (31558800).

Almost surely, 2^631681713 is an apocalyptic number.

It is an amenable number.

631681713 is a deficient number, since it is larger than the sum of its proper divisors (378199887).

631681713 is a wasteful number, since it uses less digits than its factorization.

631681713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3718 (or 3712 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 631681713 is about 25133.2789941941. The cubic root of 631681713 is about 858.0239980573.

The spelling of 631681713 in words is "six hundred thirty-one million, six hundred eighty-one thousand, seven hundred thirteen".