31300232013 has 48 divisors (see below), whose sum is σ = 47386684800. Its totient is φ = 19890677760.

The previous prime is 31300232009. The next prime is 31300232071. The reversal of 31300232013 is 31023200313.

31300232013 is a `hidden beast` number, since 31 + 300 + 2 + 320 + 13 = 666.

It is not a de Polignac number, because 31300232013 - 2² = 31300232009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31300232213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3631453 + ... + 3640061.

It is an arithmetic number, because the mean of its divisors is an integer number (987222600).

Almost surely, 2^31300232013 is an apocalyptic number.

It is an amenable number.

31300232013 is a deficient number, since it is larger than the sum of its proper divisors (16086452787).

31300232013 is a wasteful number, since it uses less digits than its factorization.

31300232013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8882 (or 8879 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 31300232013 its reverse (31023200313), we get a palindrome (62323432326).

The spelling of 31300232013 in words is "thirty-one billion, three hundred million, two hundred thirty-two thousand, thirteen".