311322133321 has 6 divisors (see below), whose sum is σ = 325446389450. Its totient is φ = 297786387888.

The previous prime is 311322133301. The next prime is 311322133327. The reversal of 311322133321 is 123331223113.

It can be written as a sum of positive squares in only one way, i.e., 205299610000 + 106022523321 = 453100^2 + 325611^2 .

It is not a de Polignac number, because 311322133321 - 2¹⁵ = 311322100553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311322133327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 294254796 + ... + 294255853.

Almost surely, 2^311322133321 is an apocalyptic number.

It is an amenable number.

311322133321 is a deficient number, since it is larger than the sum of its proper divisors (14124256129).

311322133321 is an equidigital number, since it uses as much as digits as its factorization.

311322133321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588510695 (or 588510672 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

Adding to 311322133321 its reverse (123331223113), we get a palindrome (434653356434).

The spelling of 311322133321 in words is "three hundred eleven billion, three hundred twenty-two million, one hundred thirty-three thousand, three hundred twenty-one".