43231689939 has 16 divisors (see below), whose sum is σ = 61283319552. Its totient is φ = 27047880288.

The previous prime is 43231689931. The next prime is 43231689967. The reversal of 43231689939 is 93998613234.

It is a happy number.

43231689939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43231689939 - 2³ = 43231689931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43231689931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5907157 + ... + 5914470.

It is an arithmetic number, because the mean of its divisors is an integer number (3830207472).

Almost surely, 2^43231689939 is an apocalyptic number.

43231689939 is a deficient number, since it is larger than the sum of its proper divisors (18051629613).

43231689939 is a wasteful number, since it uses less digits than its factorization.

43231689939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11821706.

The product of its digits is 7558272, while the sum is 57.

The spelling of 43231689939 in words is "forty-three billion, two hundred thirty-one million, six hundred eighty-nine thousand, nine hundred thirty-nine".