313012120213 has 16 divisors (see below), whose sum is σ = 342824248816. Its totient is φ = 284024931840.

The previous prime is 313012120189. The next prime is 313012120229. The reversal of 313012120213 is 312021210313.

It can be written as a sum of positive squares in 8 ways, for example, as 110302365924 + 202709754289 = 332118^2 + 450233^2 .

It is not a de Polignac number, because 313012120213 - 2²⁹ = 312475249301 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 (313012120243) 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, 1194895 + ... + 1433107.

It is an arithmetic number, because the mean of its divisors is an integer number (21426515551).

Almost surely, 2^313012120213 is an apocalyptic number.

It is an amenable number.

313012120213 is a deficient number, since it is larger than the sum of its proper divisors (29812128603).

313012120213 is a wasteful number, since it uses less digits than its factorization.

313012120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239944.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 313012120213 its reverse (312021210313), we get a palindrome (625033330526).

The spelling of 313012120213 in words is "three hundred thirteen billion, twelve million, one hundred twenty thousand, two hundred thirteen".