12145323 has 4 divisors (see below), whose sum is σ = 16193768. Its totient is φ = 8096880.

The previous prime is 12145319. The next prime is 12145349. The reversal of 12145323 is 32354121.

12145323 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12145323 - 2² = 12145319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12145323.

It is not an unprimeable number, because it can be changed into a prime (12145303) 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, 2024218 + ... + 2024223.

It is an arithmetic number, because the mean of its divisors is an integer number (4048442).

Almost surely, 2^12145323 is an apocalyptic number.

12145323 is a deficient number, since it is larger than the sum of its proper divisors (4048445).

12145323 is an equidigital number, since it uses as much as digits as its factorization.

12145323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048444.

The product of its digits is 720, while the sum is 21.

The square root of 12145323 is about 3485.0140602299. The cubic root of 12145323 is about 229.8633277494.

Adding to 12145323 its reverse (32354121), we get a palindrome (44499444).

The spelling of 12145323 in words is "twelve million, one hundred forty-five thousand, three hundred twenty-three".