12113239 has 4 divisors (see below), whose sum is σ = 12283920. Its totient is φ = 11942560.

The previous prime is 12113221. The next prime is 12113251. The reversal of 12113239 is 93231121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93231121 = 23 ⋅4053527.

It is a cyclic number.

It is not a de Polignac number, because 12113239 - 2⁵ = 12113207 is a prime.

It is a super-2 number, since 2×12113239² = 293461118142242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113209) 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, 85234 + ... + 85375.

It is an arithmetic number, because the mean of its divisors is an integer number (3070980).

Almost surely, 2^12113239 is an apocalyptic number.

12113239 is a deficient number, since it is larger than the sum of its proper divisors (170681).

12113239 is an equidigital number, since it uses as much as digits as its factorization.

12113239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170680.

The product of its digits is 324, while the sum is 22.

The square root of 12113239 is about 3480.4078783959. The cubic root of 12113239 is about 229.6607411621.

The spelling of 12113239 in words is "twelve million, one hundred thirteen thousand, two hundred thirty-nine".