321144401 has 4 divisors (see below), whose sum is σ = 325209600. Its totient is φ = 317079204.

The previous prime is 321144379. The next prime is 321144413. The reversal of 321144401 is 104441123.

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, and also an emirpimes, since its reverse is a distinct semiprime: 104441123 = 863 ⋅121021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321144401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321144491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032481 + ... + 2032638.

It is an arithmetic number, because the mean of its divisors is an integer number (81302400).

Almost surely, 2^321144401 is an apocalyptic number.

It is an amenable number.

321144401 is a deficient number, since it is larger than the sum of its proper divisors (4065199).

321144401 is an equidigital number, since it uses as much as digits as its factorization.

321144401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065198.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 321144401 is about 17920.5022530062. The cubic root of 321144401 is about 684.8047828454.

Adding to 321144401 its reverse (104441123), we get a palindrome (425585524).

The spelling of 321144401 in words is "three hundred twenty-one million, one hundred forty-four thousand, four hundred one".