321131233321 has 4 divisors (see below), whose sum is σ = 338032877200. Its totient is φ = 304229589444.

The previous prime is 321131233309. The next prime is 321131233349. The reversal of 321131233321 is 123332131123.

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 321131233321 - 2⁵ = 321131233289 is a prime.

It is a super-3 number, since 3×321131233321³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321131233921) 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, 8450821911 + ... + 8450821948.

It is an arithmetic number, because the mean of its divisors is an integer number (84508219300).

Almost surely, 2^321131233321 is an apocalyptic number.

It is an amenable number.

321131233321 is a deficient number, since it is larger than the sum of its proper divisors (16901643879).

321131233321 is a wasteful number, since it uses less digits than its factorization.

321131233321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16901643878.

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

Adding to 321131233321 its reverse (123332131123), we get a palindrome (444463364444).

The spelling of 321131233321 in words is "three hundred twenty-one billion, one hundred thirty-one million, two hundred thirty-three thousand, three hundred twenty-one".