12193309 has 2 divisors, whose sum is σ = 12193310. Its totient is φ = 12193308.

The previous prime is 12193297. The next prime is 12193333. The reversal of 12193309 is 90339121.

12193309 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., 9703225 + 2490084 = 3115^2 + 1578^2 .

It is an emirp because it is prime and its reverse (90339121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12193309 - 2²³ = 3804701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12193009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6096654 + 6096655.

It is an arithmetic number, because the mean of its divisors is an integer number (6096655).

Almost surely, 2^12193309 is an apocalyptic number.

It is an amenable number.

12193309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12193309 is an equidigital number, since it uses as much as digits as its factorization.

12193309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 12193309 is about 3491.8918940884. The cubic root of 12193309 is about 230.1656588524.

The spelling of 12193309 in words is "twelve million, one hundred ninety-three thousand, three hundred nine".