12432113 has 4 divisors (see below), whose sum is σ = 12515700. Its totient is φ = 12348528.

The previous prime is 12432107. The next prime is 12432163. The reversal of 12432113 is 31123421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31123421 = 7 ⋅4446203.

It can be written as a sum of positive squares in 2 ways, for example, as 824464 + 11607649 = 908^2 + 3407^2 .

It is a cyclic number.

It is not a de Polignac number, because 12432113 - 2⁸ = 12431857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12432091 and 12432100.

It is not an unprimeable number, because it can be changed into a prime (12432163) 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, 41570 + ... + 41867.

It is an arithmetic number, because the mean of its divisors is an integer number (3128925).

Almost surely, 2^12432113 is an apocalyptic number.

It is an amenable number.

12432113 is a deficient number, since it is larger than the sum of its proper divisors (83587).

12432113 is an equidigital number, since it uses as much as digits as its factorization.

12432113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83586.

The product of its digits is 144, while the sum is 17.

The square root of 12432113 is about 3525.9201635885. The cubic root of 12432113 is about 231.6585407383.

Adding to 12432113 its reverse (31123421), we get a palindrome (43555534).

The spelling of 12432113 in words is "twelve million, four hundred thirty-two thousand, one hundred thirteen".