313023222013 has 4 divisors (see below), whose sum is σ = 313044165180. Its totient is φ = 313002278848.

The previous prime is 313023221989. The next prime is 313023222047. The reversal of 313023222013 is 310222320313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74705462329 + 238317759684 = 273323^2 + 488178^2 .

It is a cyclic number.

It is not a de Polignac number, because 313023222013 - 2⁹ = 313023221501 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 (313023222713) 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 3 ways as a sum of consecutive naturals, for example, 10449148 + ... + 10479061.

It is an arithmetic number, because the mean of its divisors is an integer number (78261041295).

Almost surely, 2^313023222013 is an apocalyptic number.

It is an amenable number.

313023222013 is a deficient number, since it is larger than the sum of its proper divisors (20943167).

313023222013 is a wasteful number, since it uses less digits than its factorization.

313023222013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20943166.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 313023222013 its reverse (310222320313), we get a palindrome (623245542326).

The spelling of 313023222013 in words is "three hundred thirteen billion, twenty-three million, two hundred twenty-two thousand, thirteen".