321310233032321 has 4 divisors (see below), whose sum is σ = 346026404804052. Its totient is φ = 296594061260592.

The previous prime is 321310233032311. The next prime is 321310233032357. The reversal of 321310233032321 is 123230332013123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114839514342400 + 206470718689921 = 10716320^2 + 14369089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321310233032321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321310233032311) 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, 12358085885846 + ... + 12358085885871.

It is an arithmetic number, because the mean of its divisors is an integer number (86506601201013).

Almost surely, 2^{321310233032321} is an apocalyptic number.

It is an amenable number.

321310233032321 is a deficient number, since it is larger than the sum of its proper divisors (24716171771731).

321310233032321 is a wasteful number, since it uses less digits than its factorization.

321310233032321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24716171771730.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 321310233032321 its reverse (123230332013123), we get a palindrome (444540565045444).

The spelling of 321310233032321 in words is "three hundred twenty-one trillion, three hundred ten billion, two hundred thirty-three million, thirty-two thousand, three hundred twenty-one".