311322203321 has 4 divisors (see below), whose sum is σ = 311994605952. Its totient is φ = 310649800692.

The previous prime is 311322203249. The next prime is 311322203369. The reversal of 311322203321 is 123302223113.

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 311322203321 - 2³⁴ = 294142334137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311322203371) 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, 336200621 + ... + 336201546.

It is an arithmetic number, because the mean of its divisors is an integer number (77998651488).

Almost surely, 2^311322203321 is an apocalyptic number.

It is an amenable number.

311322203321 is a deficient number, since it is larger than the sum of its proper divisors (672402631).

311322203321 is an equidigital number, since it uses as much as digits as its factorization.

311322203321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672402630.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 311322203321 its reverse (123302223113), we get a palindrome (434624426434).

The spelling of 311322203321 in words is "three hundred eleven billion, three hundred twenty-two million, two hundred three thousand, three hundred twenty-one".