313020321121 has 4 divisors (see below), whose sum is σ = 313726913712. Its totient is φ = 312313728532.

The previous prime is 313020321101. The next prime is 313020321143. The reversal of 313020321121 is 121123020313.

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 313020321121 - 2²⁵ = 312986766689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313020321101) 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, 353295631 + ... + 353296516.

It is an arithmetic number, because the mean of its divisors is an integer number (78431728428).

Almost surely, 2^313020321121 is an apocalyptic number.

It is an amenable number.

313020321121 is a deficient number, since it is larger than the sum of its proper divisors (706592591).

313020321121 is an equidigital number, since it uses as much as digits as its factorization.

313020321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706592590.

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

Adding to 313020321121 its reverse (121123020313), we get a palindrome (434143341434).

The spelling of 313020321121 in words is "three hundred thirteen billion, twenty million, three hundred twenty-one thousand, one hundred twenty-one".