43531538323 has 12 divisors (see below), whose sum is σ = 53871660048. Its totient is φ = 34442534880.

The previous prime is 43531538251. The next prime is 43531538329. The reversal of 43531538323 is 32383513534.

43531538323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-43531538323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43531538329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18397608 + ... + 18399973.

It is an arithmetic number, because the mean of its divisors is an integer number (4489305004).

Almost surely, 2^43531538323 is an apocalyptic number.

43531538323 is a deficient number, since it is larger than the sum of its proper divisors (10340121725).

43531538323 is a wasteful number, since it uses less digits than its factorization.

43531538323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36797614 (or 36797601 counting only the distinct ones).

The product of its digits is 388800, while the sum is 40.

The spelling of 43531538323 in words is "forty-three billion, five hundred thirty-one million, five hundred thirty-eight thousand, three hundred twenty-three".