304180109 has 2 divisors, whose sum is σ = 304180110. Its totient is φ = 304180108.

The previous prime is 304180061. The next prime is 304180111. The reversal of 304180109 is 901081403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295943209 + 8236900 = 17203^2 + 2870^2 .

It is a cyclic number.

It is not a de Polignac number, because 304180109 - 2¹² = 304176013 is a prime.

It is a super-2 number, since 2×304180109² = 185051077422503762, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 304180111, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304180909) 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, 152090054 + 152090055.

It is an arithmetic number, because the mean of its divisors is an integer number (152090055).

Almost surely, 2^304180109 is an apocalyptic number.

It is an amenable number.

304180109 is a deficient number, since it is larger than the sum of its proper divisors (1).

304180109 is an equidigital number, since it uses as much as digits as its factorization.

304180109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 304180109 is about 17440.7599891748. The cubic root of 304180109 is about 672.5278450626.

The spelling of 304180109 in words is "three hundred four million, one hundred eighty thousand, one hundred nine".