631635013 has 8 divisors (see below), whose sum is σ = 652559616. Its totient is φ = 610744800.

The previous prime is 631635007. The next prime is 631635019. The reversal of 631635013 is 310536136.

It is an interprime number because it is at equal distance from previous prime (631635007) and next prime (631635019).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 631635013 - 2⁹ = 631634501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631635019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31833 + ... + 47713.

It is an arithmetic number, because the mean of its divisors is an integer number (81569952).

Almost surely, 2^631635013 is an apocalyptic number.

It is an amenable number.

631635013 is a deficient number, since it is larger than the sum of its proper divisors (20924603).

631635013 is a wasteful number, since it uses less digits than its factorization.

631635013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17195.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 631635013 is about 25132.3499299210. The cubic root of 631635013 is about 858.0028530685.

The spelling of 631635013 in words is "six hundred thirty-one million, six hundred thirty-five thousand, thirteen".