12333509 has 2 divisors, whose sum is σ = 12333510. Its totient is φ = 12333508.

The previous prime is 12333499. The next prime is 12333511. The reversal of 12333509 is 90533321.

12333509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12271009 + 62500 = 3503^2 + 250^2 .

It is an emirp because it is prime and its reverse (90533321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12333509 - 2⁴ = 12333493 is a prime.

Together with 12333511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12333539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6166754 + 6166755.

It is an arithmetic number, because the mean of its divisors is an integer number (6166755).

Almost surely, 2^12333509 is an apocalyptic number.

It is an amenable number.

12333509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12333509 is an equidigital number, since it uses as much as digits as its factorization.

12333509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 12333509 is about 3511.9095945084. The cubic root of 12333509 is about 231.0444558780.

The spelling of 12333509 in words is "twelve million, three hundred thirty-three thousand, five hundred nine".