311322131321 has 8 divisors (see below), whose sum is σ = 315729223488. Its totient is φ = 306915658000.

The previous prime is 311322131249. The next prime is 311322131371. The reversal of 311322131321 is 123131223113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311322131321 - 2¹⁴ = 311322114937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311322131371) 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 7 ways as a sum of consecutive naturals, for example, 910031 + ... + 1204491.

It is an arithmetic number, because the mean of its divisors is an integer number (39466152936).

Almost surely, 2^311322131321 is an apocalyptic number.

It is an amenable number.

311322131321 is a deficient number, since it is larger than the sum of its proper divisors (4407092167).

311322131321 is a wasteful number, since it uses less digits than its factorization.

311322131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309423.

The product of its digits is 648, while the sum is 23.

Adding to 311322131321 its reverse (123131223113), we get a palindrome (434453354434).

The spelling of 311322131321 in words is "three hundred eleven billion, three hundred twenty-two million, one hundred thirty-one thousand, three hundred twenty-one".