304124321 has 2 divisors, whose sum is σ = 304124322. Its totient is φ = 304124320.

The previous prime is 304124299. The next prime is 304124329. The reversal of 304124321 is 123421403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289000000 + 15124321 = 17000^2 + 3889^2 .

It is a cyclic number.

It is not a de Polignac number, because 304124321 - 2⁶ = 304124257 is a prime.

It is a super-2 number, since 2×304124321² = 184983205247422082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 304124293 and 304124302.

It is not a weakly prime, because it can be changed into another prime (304124329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152062160 + 152062161.

It is an arithmetic number, because the mean of its divisors is an integer number (152062161).

Almost surely, 2^304124321 is an apocalyptic number.

It is an amenable number.

304124321 is a deficient number, since it is larger than the sum of its proper divisors (1).

304124321 is an equidigital number, since it uses as much as digits as its factorization.

304124321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 304124321 is about 17439.1605589260. The cubic root of 304124321 is about 672.4867276716.

Adding to 304124321 its reverse (123421403), we get a palindrome (427545724).

The spelling of 304124321 in words is "three hundred four million, one hundred twenty-four thousand, three hundred twenty-one".