43043231 has 16 divisors (see below), whose sum is σ = 53829888. Its totient is φ = 33436800.

The previous prime is 43043207. The next prime is 43043243. The reversal of 43043231 is 13234034.

43043231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43043231 is a prime.

It is a super-2 number, since 2×43043231² = 3705439469838722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43043251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32696 + ... + 33986.

It is an arithmetic number, because the mean of its divisors is an integer number (3364368).

Almost surely, 2^43043231 is an apocalyptic number.

43043231 is a deficient number, since it is larger than the sum of its proper divisors (10786657).

43043231 is a wasteful number, since it uses less digits than its factorization.

43043231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 43043231 is about 6560.7340290550. The cubic root of 43043231 is about 350.4571740027.

Adding to 43043231 its reverse (13234034), we get a palindrome (56277265).

The spelling of 43043231 in words is "forty-three million, forty-three thousand, two hundred thirty-one".