321131033321 has 16 divisors (see below), whose sum is σ = 382321505280. Its totient is φ = 263932136640.

The previous prime is 321131033261. The next prime is 321131033341. The reversal of 321131033321 is 123330131123.

It is a cyclic number.

It is not a de Polignac number, because 321131033321 - 2¹⁰ = 321131032297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321131033341) 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, 6764726 + ... + 6812031.

It is an arithmetic number, because the mean of its divisors is an integer number (23895094080).

Almost surely, 2^321131033321 is an apocalyptic number.

321131033321 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

321131033321 is a deficient number, since it is larger than the sum of its proper divisors (61190471959).

321131033321 is a wasteful number, since it uses less digits than its factorization.

321131033321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13576904.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 321131033321 its reverse (123330131123), we get a palindrome (444461164444).

The spelling of 321131033321 in words is "three hundred twenty-one billion, one hundred thirty-one million, thirty-three thousand, three hundred twenty-one".