243430043 has 2 divisors, whose sum is σ = 243430044. Its totient is φ = 243430042.

The previous prime is 243430037. The next prime is 243430049. The reversal of 243430043 is 340034342.

It is a happy number.

243430043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (243430037) and next prime (243430049).

It is a cyclic number.

It is not a de Polignac number, because 243430043 - 2¹⁴ = 243413659 is a prime.

It is not a weakly prime, because it can be changed into another prime (243430049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121715021 + 121715022.

It is an arithmetic number, because the mean of its divisors is an integer number (121715022).

Almost surely, 2^243430043 is an apocalyptic number.

243430043 is a deficient number, since it is larger than the sum of its proper divisors (1).

243430043 is an equidigital number, since it uses as much as digits as its factorization.

243430043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 243430043 is about 15602.2448064373. The cubic root of 243430043 is about 624.3930474579.

Adding to 243430043 its reverse (340034342), we get a palindrome (583464385).

The spelling of 243430043 in words is "two hundred forty-three million, four hundred thirty thousand, forty-three".