313122013 has 4 divisors (see below), whose sum is σ = 313158528. Its totient is φ = 313085500.

The previous prime is 313121987. The next prime is 313122059. The reversal of 313122013 is 310221313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 310221313 = 2273 ⋅136481.

It is a cyclic number.

It is not a de Polignac number, because 313122013 - 2⁵ = 313121981 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 (313122913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2388 + ... + 25138.

It is an arithmetic number, because the mean of its divisors is an integer number (78289632).

Almost surely, 2^313122013 is an apocalyptic number.

It is an amenable number.

313122013 is a deficient number, since it is larger than the sum of its proper divisors (36515).

313122013 is a wasteful number, since it uses less digits than its factorization.

313122013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36514.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 313122013 is about 17695.2539682255. The cubic root of 313122013 is about 679.0543465646.

Adding to 313122013 its reverse (310221313), we get a palindrome (623343326).

The spelling of 313122013 in words is "three hundred thirteen million, one hundred twenty-two thousand, thirteen".