321311003321 has 16 divisors (see below), whose sum is σ = 400659499008. Its totient is φ = 250332234000.

The previous prime is 321311003261. The next prime is 321311003323. The reversal of 321311003321 is 123300113123.

It is a cyclic number.

It is not a de Polignac number, because 321311003321 - 2¹⁰ = 321311002297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321311003293 and 321311003302.

It is not an unprimeable number, because it can be changed into a prime (321311003323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156896 + ... + 816846.

It is an arithmetic number, because the mean of its divisors is an integer number (25041218688).

Almost surely, 2^321311003321 is an apocalyptic number.

It is an amenable number.

321311003321 is a deficient number, since it is larger than the sum of its proper divisors (79348495687).

321311003321 is a wasteful number, since it uses less digits than its factorization.

321311003321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666292.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 321311003321 its reverse (123300113123), we get a palindrome (444611116444).

The spelling of 321311003321 in words is "three hundred twenty-one billion, three hundred eleven million, three thousand, three hundred twenty-one".