31630415013 has 24 divisors (see below), whose sum is σ = 46478330496. Its totient is φ = 20724228000.

The previous prime is 31630415009. The next prime is 31630415029. The reversal of 31630415013 is 31051403613.

31630415013 is a `hidden beast` number, since 3 + 1 + 630 + 4 + 15 + 0 + 13 = 666.

It is not a de Polignac number, because 31630415013 - 2² = 31630415009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31630415083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124488 + ... + 280638.

It is an arithmetic number, because the mean of its divisors is an integer number (1936597104).

Almost surely, 2^31630415013 is an apocalyptic number.

It is an amenable number.

31630415013 is a deficient number, since it is larger than the sum of its proper divisors (14847915483).

31630415013 is a wasteful number, since it uses less digits than its factorization.

31630415013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156545 (or 156542 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 31630415013 its reverse (31051403613), we get a palindrome (62681818626).

The spelling of 31630415013 in words is "thirty-one billion, six hundred thirty million, four hundred fifteen thousand, thirteen".