1304304321 has 8 divisors (see below), whose sum is σ = 1749742240. Its totient is φ = 864201312.

The previous prime is 1304304317. The next prime is 1304304329. The reversal of 1304304321 is 1234034031.

1304304321 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1304304321 - 2² = 1304304317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304304329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1333156 + ... + 1334133.

It is an arithmetic number, because the mean of its divisors is an integer number (218717780).

Almost surely, 2^1304304321 is an apocalyptic number.

It is an amenable number.

1304304321 is a deficient number, since it is larger than the sum of its proper divisors (445437919).

1304304321 is a wasteful number, since it uses less digits than its factorization.

1304304321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2667455.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1304304321 is about 36115.1536200526. The cubic root of 1304304321 is about 1092.5960959062.

Adding to 1304304321 its reverse (1234034031), we get a palindrome (2538338352).

The spelling of 1304304321 in words is "one billion, three hundred four million, three hundred four thousand, three hundred twenty-one".