12323731 has 4 divisors (see below), whose sum is σ = 14084272. Its totient is φ = 10563192.

The previous prime is 12323713. The next prime is 12323737. The reversal of 12323731 is 13732321.

It is a happy number.

12323731 is digitally balanced in base 2, 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, and also an emirpimes, since its reverse is a distinct semiprime: 13732321 = 233 ⋅58937.

It is a cyclic number.

It is not a de Polignac number, because 12323731 - 2⁹ = 12323219 is a prime.

It is a super-2 number, since 2×12323731² = 303748691520722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12323737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880260 + ... + 880273.

It is an arithmetic number, because the mean of its divisors is an integer number (3521068).

Almost surely, 2^12323731 is an apocalyptic number.

12323731 is a deficient number, since it is larger than the sum of its proper divisors (1760541).

12323731 is an equidigital number, since it uses as much as digits as its factorization.

12323731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760540.

The product of its digits is 756, while the sum is 22.

The square root of 12323731 is about 3510.5171983627. The cubic root of 12323731 is about 230.9833824243.

The spelling of 12323731 in words is "twelve million, three hundred twenty-three thousand, seven hundred thirty-one".