12307239 has 12 divisors (see below), whose sum is σ = 20316816. Its totient is φ = 7032672.

The previous prime is 12307237. The next prime is 12307261. The reversal of 12307239 is 93270321.

It is not a de Polignac number, because 12307239 - 2¹ = 12307237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12307237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97614 + ... + 97739.

It is an arithmetic number, because the mean of its divisors is an integer number (1693068).

Almost surely, 2^12307239 is an apocalyptic number.

12307239 is a deficient number, since it is larger than the sum of its proper divisors (8009577).

12307239 is a wasteful number, since it uses less digits than its factorization.

12307239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195366 (or 195363 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 12307239 is about 3508.1674703469. The cubic root of 12307239 is about 230.8803000466.

The spelling of 12307239 in words is "twelve million, three hundred seven thousand, two hundred thirty-nine".