304320412321 has 16 divisors (see below), whose sum is σ = 315818673408. Its totient is φ = 293036745600.

The previous prime is 304320412301. The next prime is 304320412339. The reversal of 304320412321 is 123214023403.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304320412321 is a prime.

It is a super-2 number, since 2×304320412321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304320412301) 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, 1060891 + ... + 1316863.

It is an arithmetic number, because the mean of its divisors is an integer number (19738667088).

Almost surely, 2^304320412321 is an apocalyptic number.

It is an amenable number.

304320412321 is a deficient number, since it is larger than the sum of its proper divisors (11498261087).

304320412321 is a wasteful number, since it uses less digits than its factorization.

304320412321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256392.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 304320412321 its reverse (123214023403), we get a palindrome (427534435724).

The spelling of 304320412321 in words is "three hundred four billion, three hundred twenty million, four hundred twelve thousand, three hundred twenty-one".