12433213 has 4 divisors (see below), whose sum is σ = 13389628. Its totient is φ = 11476800.

The previous prime is 12433177. The next prime is 12433231. The reversal of 12433213 is 31233421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7689529 + 4743684 = 2773^2 + 2178^2 .

It is a cyclic number.

It is not a de Polignac number, because 12433213 - 2⁹ = 12432701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12433243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478188 + ... + 478213.

It is an arithmetic number, because the mean of its divisors is an integer number (3347407).

Almost surely, 2^12433213 is an apocalyptic number.

12433213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12433213 is a deficient number, since it is larger than the sum of its proper divisors (956415).

12433213 is an equidigital number, since it uses as much as digits as its factorization.

12433213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956414.

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

The square root of 12433213 is about 3526.0761477881. The cubic root of 12433213 is about 231.6653729606.

Adding to 12433213 its reverse (31233421), we get a palindrome (43666634).

The spelling of 12433213 in words is "twelve million, four hundred thirty-three thousand, two hundred thirteen".