304230321 has 6 divisors (see below), whose sum is σ = 439443810. Its totient is φ = 202820208.

The previous prime is 304230313. The next prime is 304230331. The reversal of 304230321 is 123032403.

It can be written as a sum of positive squares in only one way, i.e., 304014096 + 216225 = 17436^2 + 465^2 .

It is not a de Polignac number, because 304230321 - 2³ = 304230313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 304230294 and 304230303.

It is not an unprimeable number, because it can be changed into a prime (304230331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16901676 + ... + 16901693.

It is an arithmetic number, because the mean of its divisors is an integer number (73240635).

Almost surely, 2^304230321 is an apocalyptic number.

It is an amenable number.

304230321 is a deficient number, since it is larger than the sum of its proper divisors (135213489).

304230321 is a wasteful number, since it uses less digits than its factorization.

304230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33803375 (or 33803372 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 304230321 is about 17442.1994312644. The cubic root of 304230321 is about 672.5648484795.

Adding to 304230321 its reverse (123032403), we get a palindrome (427262724).

The spelling of 304230321 in words is "three hundred four million, two hundred thirty thousand, three hundred twenty-one".