43043240230321 has 4 divisors (see below), whose sum is σ = 43561833486192. Its totient is φ = 42524646974452.

The previous prime is 43043240230303. The next prime is 43043240230337. The reversal of 43043240230321 is 12303204234034.

It is a happy number.

43043240230321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43043240230321 - 2²¹ = 43043238133169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43043240230301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259296627811 + ... + 259296627976.

It is an arithmetic number, because the mean of its divisors is an integer number (10890458371548).

Almost surely, 2^{43043240230321} is an apocalyptic number.

It is an amenable number.

43043240230321 is a deficient number, since it is larger than the sum of its proper divisors (518593255871).

43043240230321 is an equidigital number, since it uses as much as digits as its factorization.

43043240230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518593255870.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 43043240230321 its reverse (12303204234034), we get a palindrome (55346444464355).

The spelling of 43043240230321 in words is "forty-three trillion, forty-three billion, two hundred forty million, two hundred thirty thousand, three hundred twenty-one".