304540109 has 2 divisors, whose sum is σ = 304540110. Its totient is φ = 304540108.

The previous prime is 304540099. The next prime is 304540127. The reversal of 304540109 is 901045403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 276290884 + 28249225 = 16622^2 + 5315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304540109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304500109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152270054 + 152270055.

It is an arithmetic number, because the mean of its divisors is an integer number (152270055).

Almost surely, 2^304540109 is an apocalyptic number.

It is an amenable number.

304540109 is a deficient number, since it is larger than the sum of its proper divisors (1).

304540109 is an equidigital number, since it uses as much as digits as its factorization.

304540109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 304540109 is about 17451.0775885044. The cubic root of 304540109 is about 672.7930547926.

The spelling of 304540109 in words is "three hundred four million, five hundred forty thousand, one hundred nine".