313123333013 has 4 divisors (see below), whose sum is σ = 331542352620. Its totient is φ = 294704313408.

The previous prime is 313123332941. The next prime is 313123333027. The reversal of 313123333013 is 310333321313.

It is a happy number.

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 228711584644 + 84411748369 = 478238^2 + 290537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313123333013 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 (313123333093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9209509778 + ... + 9209509811.

It is an arithmetic number, because the mean of its divisors is an integer number (82885588155).

Almost surely, 2^313123333013 is an apocalyptic number.

It is an amenable number.

313123333013 is a deficient number, since it is larger than the sum of its proper divisors (18419019607).

313123333013 is a wasteful number, since it uses less digits than its factorization.

313123333013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18419019606.

The product of its (nonzero) digits is 4374, while the sum is 26.

Adding to 313123333013 its reverse (310333321313), we get a palindrome (623456654326).

The spelling of 313123333013 in words is "three hundred thirteen billion, one hundred twenty-three million, three hundred thirty-three thousand, thirteen".