12031443 has 24 divisors (see below), whose sum is σ = 18324240. Its totient is φ = 7801920.

The previous prime is 12031417. The next prime is 12031471. The reversal of 12031443 is 34413021.

It is not a de Polignac number, because 12031443 - 2¹⁰ = 12030419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49803 + ... + 50043.

It is an arithmetic number, because the mean of its divisors is an integer number (763510).

Almost surely, 2^12031443 is an apocalyptic number.

12031443 is a deficient number, since it is larger than the sum of its proper divisors (6292797).

12031443 is an equidigital number, since it uses as much as digits as its factorization.

12031443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 12031443 is about 3468.6370522152. The cubic root of 12031443 is about 229.1426366135.

Adding to 12031443 its reverse (34413021), we get a palindrome (46444464).

The spelling of 12031443 in words is "twelve million, thirty-one thousand, four hundred forty-three".