304108421 has 2 divisors, whose sum is σ = 304108422. Its totient is φ = 304108420.

The previous prime is 304108411. The next prime is 304108423. The reversal of 304108421 is 124801403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279357796 + 24750625 = 16714^2 + 4975^2 .

It is a cyclic number.

It is not a de Polignac number, because 304108421 - 2¹⁴ = 304092037 is a prime.

It is a super-2 number, since 2×304108421² = 184963863446226482, which contains 22 as substring.

Together with 304108423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304108423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152054210 + 152054211.

It is an arithmetic number, because the mean of its divisors is an integer number (152054211).

Almost surely, 2^304108421 is an apocalyptic number.

It is an amenable number.

304108421 is a deficient number, since it is larger than the sum of its proper divisors (1).

304108421 is an equidigital number, since it uses as much as digits as its factorization.

304108421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 304108421 is about 17438.7046824012. The cubic root of 304108421 is about 672.4750079849.

Adding to 304108421 its reverse (124801403), we get a palindrome (428909824).

The spelling of 304108421 in words is "three hundred four million, one hundred eight thousand, four hundred twenty-one".