12443313 has 4 divisors (see below), whose sum is σ = 16591088. Its totient is φ = 8295540.

The previous prime is 12443311. The next prime is 12443317. The reversal of 12443313 is 31334421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31334421 = 3 ⋅10444807.

It is not a de Polignac number, because 12443313 - 2¹ = 12443311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12443313.

It is not an unprimeable number, because it can be changed into a prime (12443311) 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, 2073883 + ... + 2073888.

It is an arithmetic number, because the mean of its divisors is an integer number (4147772).

Almost surely, 2^12443313 is an apocalyptic number.

It is an amenable number.

12443313 is a deficient number, since it is larger than the sum of its proper divisors (4147775).

12443313 is an equidigital number, since it uses as much as digits as its factorization.

12443313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4147774.

The product of its digits is 864, while the sum is 21.

The square root of 12443313 is about 3527.5080439313. The cubic root of 12443313 is about 231.7280863551.

Adding to 12443313 its reverse (31334421), we get a palindrome (43777734).

The spelling of 12443313 in words is "twelve million, four hundred forty-three thousand, three hundred thirteen".