311223311321 has 8 divisors (see below), whose sum is σ = 335168347584. Its totient is φ = 287278958160.

The previous prime is 311223311303. The next prime is 311223311351. The reversal of 311223311321 is 123113322113.

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 311223311321 - 2⁶ = 311223311257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311223311351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1159076 + ... + 1402106.

It is an arithmetic number, because the mean of its divisors is an integer number (41896043448).

Almost surely, 2^311223311321 is an apocalyptic number.

It is an amenable number.

311223311321 is a deficient number, since it is larger than the sum of its proper divisors (23945036263).

311223311321 is a wasteful number, since it uses less digits than its factorization.

311223311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341551.

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

Adding to 311223311321 its reverse (123113322113), we get a palindrome (434336633434).

The spelling of 311223311321 in words is "three hundred eleven billion, two hundred twenty-three million, three hundred eleven thousand, three hundred twenty-one".