631631659713 has 16 divisors (see below), whose sum is σ = 848771770176. Its totient is φ = 417790929920.

The previous prime is 631631659667. The next prime is 631631659739. The reversal of 631631659713 is 317956136136.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 631631659713 - 2⁹ = 631631659201 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (631631159713) 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, 1869181 + ... + 2181077.

It is an arithmetic number, because the mean of its divisors is an integer number (53048235636).

Almost surely, 2^631631659713 is an apocalyptic number.

It is an amenable number.

631631659713 is a deficient number, since it is larger than the sum of its proper divisors (217140110463).

631631659713 is a wasteful number, since it uses less digits than its factorization.

631631659713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317184.

The product of its digits is 1837080, while the sum is 51.

The spelling of 631631659713 in words is "six hundred thirty-one billion, six hundred thirty-one million, six hundred fifty-nine thousand, seven hundred thirteen".