304290431 has 2 divisors, whose sum is σ = 304290432. Its totient is φ = 304290430.

The previous prime is 304290421. The next prime is 304290439. The reversal of 304290431 is 134092403.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304290431 is a prime.

It is a super-2 number, since 2×304290431² = 185185332796331522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 304290431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304290439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152145215 + 152145216.

It is an arithmetic number, because the mean of its divisors is an integer number (152145216).

Almost surely, 2^304290431 is an apocalyptic number.

304290431 is a deficient number, since it is larger than the sum of its proper divisors (1).

304290431 is an equidigital number, since it uses as much as digits as its factorization.

304290431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 304290431 is about 17443.9224660052. The cubic root of 304290431 is about 672.6091408111.

The spelling of 304290431 in words is "three hundred four million, two hundred ninety thousand, four hundred thirty-one".