12240323 has 4 divisors (see below), whose sum is σ = 12960360. Its totient is φ = 11520288.

The previous prime is 12240311. The next prime is 12240341. The reversal of 12240323 is 32304221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32304221 = 109 ⋅296369.

It is a de Polignac number, because none of the positive numbers 2^k-12240323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 720019 = 12240323 / (1 + 2 + 2 + 4 + 0 + 3 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12240343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359993 + ... + 360026.

It is an arithmetic number, because the mean of its divisors is an integer number (3240090).

Almost surely, 2^12240323 is an apocalyptic number.

12240323 is a deficient number, since it is larger than the sum of its proper divisors (720037).

12240323 is an equidigital number, since it uses as much as digits as its factorization.

12240323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720036.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 12240323 is about 3498.6172983051. The cubic root of 12240323 is about 230.4610976707.

Adding to 12240323 its reverse (32304221), we get a palindrome (44544544).

The spelling of 12240323 in words is "twelve million, two hundred forty thousand, three hundred twenty-three".