321404440232321 has 16 divisors (see below), whose sum is σ = 332557159545600. Its totient is φ = 310256380728000.

The previous prime is 321404440232297. The next prime is 321404440232329. The reversal of 321404440232321 is 123232044404123.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321404440232321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321404440232329) 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, 4073475971 + ... + 4073554871.

It is an arithmetic number, because the mean of its divisors is an integer number (20784822471600).

Almost surely, 2^{321404440232321} is an apocalyptic number.

It is an amenable number.

321404440232321 is a deficient number, since it is larger than the sum of its proper divisors (11152719313279).

321404440232321 is a wasteful number, since it uses less digits than its factorization.

321404440232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106640.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 321404440232321 its reverse (123232044404123), we get a palindrome (444636484636444).

The spelling of 321404440232321 in words is "three hundred twenty-one trillion, four hundred four billion, four hundred forty million, two hundred thirty-two thousand, three hundred twenty-one".