631607013 has 12 divisors (see below), whose sum is σ = 917100288. Its totient is φ = 418865640.

The previous prime is 631607003. The next prime is 631607027. The reversal of 631607013 is 310706136.

It is not a de Polignac number, because 631607013 - 2⁵ = 631606981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631607003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181995 + ... + 185432.

It is an arithmetic number, because the mean of its divisors is an integer number (76425024).

Almost surely, 2^631607013 is an apocalyptic number.

It is an amenable number.

631607013 is a deficient number, since it is larger than the sum of its proper divisors (285493275).

631607013 is a wasteful number, since it uses less digits than its factorization.

631607013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367624 (or 367621 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 631607013 is about 25131.7928727737. The cubic root of 631607013 is about 857.9901746312.

The spelling of 631607013 in words is "six hundred thirty-one million, six hundred seven thousand, thirteen".