304104391 has 2 divisors, whose sum is σ = 304104392. Its totient is φ = 304104390.

The previous prime is 304104371. The next prime is 304104401. The reversal of 304104391 is 193401403.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 304104391 - 2²⁷ = 169886663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304104341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152052195 + 152052196.

It is an arithmetic number, because the mean of its divisors is an integer number (152052196).

Almost surely, 2^304104391 is an apocalyptic number.

304104391 is a deficient number, since it is larger than the sum of its proper divisors (1).

304104391 is an equidigital number, since it uses as much as digits as its factorization.

304104391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 304104391 is about 17438.5891344455. The cubic root of 304104391 is about 672.4720374585.

Adding to 304104391 its reverse (193401403), we get a palindrome (497505794).

The spelling of 304104391 in words is "three hundred four million, one hundred four thousand, three hundred ninety-one".