12346690309 has 2 divisors, whose sum is σ = 12346690310. Its totient is φ = 12346690308.

The previous prime is 12346690241. The next prime is 12346690339. The reversal of 12346690309 is 90309664321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12259361284 + 87329025 = 110722^2 + 9345^2 .

It is a cyclic number.

It is not a de Polignac number, because 12346690309 - 2¹¹ = 12346688261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12346690339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6173345154 + 6173345155.

It is an arithmetic number, because the mean of its divisors is an integer number (6173345155).

Almost surely, 2^12346690309 is an apocalyptic number.

It is an amenable number.

12346690309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12346690309 is an equidigital number, since it uses as much as digits as its factorization.

12346690309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 43.

The spelling of 12346690309 in words is "twelve billion, three hundred forty-six million, six hundred ninety thousand, three hundred nine".