304430131 has 2 divisors, whose sum is σ = 304430132. Its totient is φ = 304430130.

The previous prime is 304430129. The next prime is 304430143. The reversal of 304430131 is 131034403.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 304430131 - 2¹ = 304430129 is a prime.

It is a super-2 number, since 2×304430131² = 185355409321354322, which contains 22 as substring.

Together with 304430129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 304430099 and 304430108.

It is not a weakly prime, because it can be changed into another prime (304439131) 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 as a sum of consecutive naturals, namely, 152215065 + 152215066.

It is an arithmetic number, because the mean of its divisors is an integer number (152215066).

Almost surely, 2^304430131 is an apocalyptic number.

304430131 is a deficient number, since it is larger than the sum of its proper divisors (1).

304430131 is an equidigital number, since it uses as much as digits as its factorization.

304430131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 304430131 is about 17447.9262664650. The cubic root of 304430131 is about 672.7120568758.

Adding to 304430131 its reverse (131034403), we get a palindrome (435464534).

The spelling of 304430131 in words is "three hundred four million, four hundred thirty thousand, one hundred thirty-one".