313011233321 has 2 divisors, whose sum is σ = 313011233322. Its totient is φ = 313011233320.

The previous prime is 313011233309. The next prime is 313011233323. The reversal of 313011233321 is 123332110313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310182163600 + 2829069721 = 556940^2 + 53189^2 .

It is an emirp because it is prime and its reverse (123332110313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313011233321 is a prime.

Together with 313011233323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313011233323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156505616660 + 156505616661.

It is an arithmetic number, because the mean of its divisors is an integer number (156505616661).

Almost surely, 2^313011233321 is an apocalyptic number.

It is an amenable number.

313011233321 is a deficient number, since it is larger than the sum of its proper divisors (1).

313011233321 is an equidigital number, since it uses as much as digits as its factorization.

313011233321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 313011233321 its reverse (123332110313), we get a palindrome (436343343634).

The spelling of 313011233321 in words is "three hundred thirteen billion, eleven million, two hundred thirty-three thousand, three hundred twenty-one".