12307109 has 2 divisors, whose sum is σ = 12307110. Its totient is φ = 12307108.

The previous prime is 12307067. The next prime is 12307171. The reversal of 12307109 is 90170321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12271009 + 36100 = 3503^2 + 190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12307109 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 (12307409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6153554 + 6153555.

It is an arithmetic number, because the mean of its divisors is an integer number (6153555).

Almost surely, 2^12307109 is an apocalyptic number.

It is an amenable number.

12307109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12307109 is an equidigital number, since it uses as much as digits as its factorization.

12307109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 12307109 is about 3508.1489421061. The cubic root of 12307109 is about 230.8794871227.

The spelling of 12307109 in words is "twelve million, three hundred seven thousand, one hundred nine".