243238027 has 2 divisors, whose sum is σ = 243238028. Its totient is φ = 243238026.

The previous prime is 243238013. The next prime is 243238063. The reversal of 243238027 is 720832342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243238027 - 2¹⁹ = 242713739 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243238027.

It is not a weakly prime, because it can be changed into another prime (243238727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121619013 + 121619014.

It is an arithmetic number, because the mean of its divisors is an integer number (121619014).

Almost surely, 2^243238027 is an apocalyptic number.

243238027 is a deficient number, since it is larger than the sum of its proper divisors (1).

243238027 is an equidigital number, since it uses as much as digits as its factorization.

243238027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 243238027 is about 15596.0901190010. The cubic root of 243238027 is about 624.2288319110.

The spelling of 243238027 in words is "two hundred forty-three million, two hundred thirty-eight thousand, twenty-seven".