2304321 has 4 divisors (see below), whose sum is σ = 3072432. Its totient is φ = 1536212.

The previous prime is 2304319. The next prime is 2304343. The reversal of 2304321 is 1234032.

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.

It is a cyclic number.

It is not a de Polignac number, because 2304321 - 2¹ = 2304319 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2304321.

It is not an unprimeable number, because it can be changed into a prime (2304521) 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, 384051 + ... + 384056.

It is an arithmetic number, because the mean of its divisors is an integer number (768108).

2^2304321 is an apocalyptic number.

It is an amenable number.

2304321 is a deficient number, since it is larger than the sum of its proper divisors (768111).

2304321 is an equidigital number, since it uses as much as digits as its factorization.

2304321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768110.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2304321 is about 1517.9990118574. Note that the first 3 decimals coincide. The cubic root of 2304321 is about 132.0832234594.

Adding to 2304321 its reverse (1234032), we get a palindrome (3538353).

The spelling of 2304321 in words is "two million, three hundred four thousand, three hundred twenty-one".