313121012013 has 8 divisors (see below), whose sum is σ = 463882980800. Its totient is φ = 208747341324.

The previous prime is 313121012011. The next prime is 313121012021. The reversal of 313121012013 is 310210121313.

It is not a de Polignac number, because 313121012013 - 2¹ = 313121012011 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 (313121012011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5798537233 + ... + 5798537286.

It is an arithmetic number, because the mean of its divisors is an integer number (57985372600).

Almost surely, 2^313121012013 is an apocalyptic number.

It is an amenable number.

313121012013 is a deficient number, since it is larger than the sum of its proper divisors (150761968787).

313121012013 is a wasteful number, since it uses less digits than its factorization.

313121012013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11597074528 (or 11597074522 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 313121012013 its reverse (310210121313), we get a palindrome (623331133326).

The spelling of 313121012013 in words is "three hundred thirteen billion, one hundred twenty-one million, twelve thousand, thirteen".