12311443 has 2 divisors, whose sum is σ = 12311444. Its totient is φ = 12311442.

The previous prime is 12311419. The next prime is 12311501. The reversal of 12311443 is 34411321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12311443 - 2⁹ = 12310931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12311443.

It is not a weakly prime, because it can be changed into another prime (12311543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155721 + 6155722.

It is an arithmetic number, because the mean of its divisors is an integer number (6155722).

Almost surely, 2^12311443 is an apocalyptic number.

12311443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311443 is an equidigital number, since it uses as much as digits as its factorization.

12311443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 12311443 is about 3508.7665924082. The cubic root of 12311443 is about 230.9065856683.

Adding to 12311443 its reverse (34411321), we get a palindrome (46722764).

The spelling of 12311443 in words is "twelve million, three hundred eleven thousand, four hundred forty-three".