2043530243 has 4 divisors (see below), whose sum is σ = 2132379408. Its totient is φ = 1954681080.

The previous prime is 2043530233. The next prime is 2043530257. The reversal of 2043530243 is 3420353402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2043530243 - 2⁴ = 2043530227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2043530213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44424548 + ... + 44424593.

It is an arithmetic number, because the mean of its divisors is an integer number (533094852).

Almost surely, 2^2043530243 is an apocalyptic number.

2043530243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2043530243 is a deficient number, since it is larger than the sum of its proper divisors (88849165).

2043530243 is an equidigital number, since it uses as much as digits as its factorization.

2043530243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88849164.

The product of its (nonzero) digits is 8640, while the sum is 26.

The square root of 2043530243 is about 45205.4227167494. The cubic root of 2043530243 is about 1268.9963018536.

Adding to 2043530243 its reverse (3420353402), we get a palindrome (5463883645).

The spelling of 2043530243 in words is "two billion, forty-three million, five hundred thirty thousand, two hundred forty-three".