2043430243 has 16 divisors (see below), whose sum is σ = 2187924480. Its totient is φ = 1901750400.

The previous prime is 2043430237. The next prime is 2043430261. The reversal of 2043430243 is 3420343402.

It is a cyclic number.

It is not a de Polignac number, because 2043430243 - 2²⁹ = 1506559331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2043430223) 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, 638778 + ... + 641968.

It is an arithmetic number, because the mean of its divisors is an integer number (136745280).

Almost surely, 2^2043430243 is an apocalyptic number.

2043430243 is a deficient number, since it is larger than the sum of its proper divisors (144494237).

2043430243 is a wasteful number, since it uses less digits than its factorization.

2043430243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3618.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 2043430243 is about 45204.3166412235. The cubic root of 2043430243 is about 1268.9756021029.

Adding to 2043430243 its reverse (3420343402), we get a palindrome (5463773645).

The spelling of 2043430243 in words is "two billion, forty-three million, four hundred thirty thousand, two hundred forty-three".