631413013 has 32 divisors (see below), whose sum is σ = 805662720. Its totient is φ = 480600000.

The previous prime is 631413001. The next prime is 631413019. The reversal of 631413013 is 310314136.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 631413013 - 2⁵ = 631412981 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 (631413019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 840388 + ... + 841138.

It is an arithmetic number, because the mean of its divisors is an integer number (25176960).

Almost surely, 2^631413013 is an apocalyptic number.

It is an amenable number.

631413013 is a deficient number, since it is larger than the sum of its proper divisors (174249707).

631413013 is a wasteful number, since it uses less digits than its factorization.

631413013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 631413013 is about 25127.9329233425. The cubic root of 631413013 is about 857.9023208786.

Adding to 631413013 its reverse (310314136), we get a palindrome (941727149).

The spelling of 631413013 in words is "six hundred thirty-one million, four hundred thirteen thousand, thirteen".