631500013 has 8 divisors (see below), whose sum is σ = 634452480. Its totient is φ = 628555200.

The previous prime is 631499989. The next prime is 631500043. The reversal of 631500013 is 310005136.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631500013 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 (631500043) 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, 217908 + ... + 220786.

It is an arithmetic number, because the mean of its divisors is an integer number (79306560).

Almost surely, 2^631500013 is an apocalyptic number.

It is an amenable number.

631500013 is a deficient number, since it is larger than the sum of its proper divisors (2952467).

631500013 is a wasteful number, since it uses less digits than its factorization.

631500013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3827.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 631500013 is about 25129.6640049166. The cubic root of 631500013 is about 857.9417214361.

Adding to 631500013 its reverse (310005136), we get a palindrome (941505149).

The spelling of 631500013 in words is "six hundred thirty-one million, five hundred thousand, thirteen".