313012120013 has 2 divisors, whose sum is σ = 313012120014. Its totient is φ = 313012120012.

The previous prime is 313012120009. The next prime is 313012120051. The reversal of 313012120013 is 310021210313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 309823597924 + 3188522089 = 556618^2 + 56467^2 .

It is a cyclic number.

It is not a de Polignac number, because 313012120013 - 2² = 313012120009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 313012119973 and 313012120000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313012120093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156506060006 + 156506060007.

It is an arithmetic number, because the mean of its divisors is an integer number (156506060007).

Almost surely, 2^313012120013 is an apocalyptic number.

It is an amenable number.

313012120013 is a deficient number, since it is larger than the sum of its proper divisors (1).

313012120013 is an equidigital number, since it uses as much as digits as its factorization.

313012120013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 313012120013 its reverse (310021210313), we get a palindrome (623033330326).

The spelling of 313012120013 in words is "three hundred thirteen billion, twelve million, one hundred twenty thousand, thirteen".