31303033012013 has 16 divisors (see below), whose sum is σ = 36576345513984. Its totient is φ = 26231342004720.

The previous prime is 31303033011947. The next prime is 31303033012039. The reversal of 31303033012013 is 31021033030313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31303033012013 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 31303033012013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31303033012313) 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, 52152533 + ... + 52749338.

It is an arithmetic number, because the mean of its divisors is an integer number (2286021594624).

Almost surely, 2^{31303033012013} is an apocalyptic number.

It is an amenable number.

31303033012013 is a deficient number, since it is larger than the sum of its proper divisors (5273312501971).

31303033012013 is a wasteful number, since it uses less digits than its factorization.

31303033012013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104902832.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 31303033012013 its reverse (31021033030313), we get a palindrome (62324066042326).

The spelling of 31303033012013 in words is "thirty-one trillion, three hundred three billion, thirty-three million, twelve thousand, thirteen".