31320313102013 has 16 divisors (see below), whose sum is σ = 33852661790976. Its totient is φ = 28805658678720.

The previous prime is 31320313101971. The next prime is 31320313102037. The reversal of 31320313102013 is 31020131302313.

It is a cyclic number.

It is not a de Polignac number, because 31320313102013 - 2¹⁶ = 31320313036477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31320313102013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320313104013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4593020 + ... + 9150762.

It is an arithmetic number, because the mean of its divisors is an integer number (2115791361936).

Almost surely, 2^{31320313102013} is an apocalyptic number.

It is an amenable number.

31320313102013 is a deficient number, since it is larger than the sum of its proper divisors (2532348688963).

31320313102013 is a wasteful number, since it uses less digits than its factorization.

31320313102013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4559684.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 31320313102013 its reverse (31020131302313), we get a palindrome (62340444404326).

The spelling of 31320313102013 in words is "thirty-one trillion, three hundred twenty billion, three hundred thirteen million, one hundred two thousand, thirteen".