12423331 has 4 divisors (see below), whose sum is σ = 12470832. Its totient is φ = 12375832.

The previous prime is 12423263. The next prime is 12423347. The reversal of 12423331 is 13332421.

12423331 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: 13332421 = 41 ⋅325181.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12423331 is a prime.

It is a super-2 number, since 2×12423331² = 308678306271122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12423299 and 12423308.

It is not an unprimeable number, because it can be changed into a prime (12423361) 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, 23356 + ... + 23881.

It is an arithmetic number, because the mean of its divisors is an integer number (3117708).

Almost surely, 2^12423331 is an apocalyptic number.

12423331 is a deficient number, since it is larger than the sum of its proper divisors (47501).

12423331 is an equidigital number, since it uses as much as digits as its factorization.

12423331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47500.

The product of its digits is 432, while the sum is 19.

The square root of 12423331 is about 3524.6745949094. The cubic root of 12423331 is about 231.6039803019.

Adding to 12423331 its reverse (13332421), we get a palindrome (25755752).

The spelling of 12423331 in words is "twelve million, four hundred twenty-three thousand, three hundred thirty-one".