304091 has 2 divisors, whose sum is σ = 304092. Its totient is φ = 304090.

The previous prime is 304081. The next prime is 304099. The reversal of 304091 is 190403.

It is a strong prime.

It is an emirp because it is prime and its reverse (190403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 304091 - 2¹⁸ = 41947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (304099) 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, 152045 + 152046.

It is an arithmetic number, because the mean of its divisors is an integer number (152046).

2³⁰⁴⁰⁹¹ is an apocalyptic number.

304091 is a deficient number, since it is larger than the sum of its proper divisors (1).

304091 is an equidigital number, since it uses as much as digits as its factorization.

304091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 304091 is about 551.4444668323. Note that the first 4 decimals coincide. The cubic root of 304091 is about 67.2462166719.

Adding to 304091 its reverse (190403), we get a palindrome (494494).

The spelling of 304091 in words is "three hundred four thousand, ninety-one".