313212120320013 has 4 divisors (see below), whose sum is σ = 417616160426688. Its totient is φ = 208808080213340.

The previous prime is 313212120319993. The next prime is 313212120320023. The reversal of 313212120320013 is 310023021212313.

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.

It is a cyclic number.

It is not a de Polignac number, because 313212120320013 - 2¹⁰ = 313212120318989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313212120320023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52202020053333 + ... + 52202020053338.

It is an arithmetic number, because the mean of its divisors is an integer number (104404040106672).

Almost surely, 2^{313212120320013} is an apocalyptic number.

It is an amenable number.

313212120320013 is a deficient number, since it is larger than the sum of its proper divisors (104404040106675).

313212120320013 is a wasteful number, since it uses less digits than its factorization.

313212120320013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104404040106674.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 313212120320013 its reverse (310023021212313), we get a palindrome (623235141532326).

The spelling of 313212120320013 in words is "three hundred thirteen trillion, two hundred twelve billion, one hundred twenty million, three hundred twenty thousand, thirteen".