12328709 has 2 divisors, whose sum is σ = 12328710. Its totient is φ = 12328708.

The previous prime is 12328703. The next prime is 12328721. The reversal of 12328709 is 90782321.

12328709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10144225 + 2184484 = 3185^2 + 1478^2 .

It is a cyclic number.

It is not a de Polignac number, because 12328709 - 2²⁰ = 11280133 is a prime.

It is a Sophie Germain prime.

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 (12328703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6164354 + 6164355.

It is an arithmetic number, because the mean of its divisors is an integer number (6164355).

Almost surely, 2^12328709 is an apocalyptic number.

It is an amenable number.

12328709 is a deficient number, since it is larger than the sum of its proper divisors (1).

12328709 is an equidigital number, since it uses as much as digits as its factorization.

12328709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 12328709 is about 3511.2261391144. The cubic root of 12328709 is about 231.0144790809.

The spelling of 12328709 in words is "twelve million, three hundred twenty-eight thousand, seven hundred nine".