243027871 has 2 divisors, whose sum is σ = 243027872. Its totient is φ = 243027870.

The previous prime is 243027847. The next prime is 243027881. The reversal of 243027871 is 178720342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243027871 - 2²³ = 234639263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243027881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121513935 + 121513936.

It is an arithmetic number, because the mean of its divisors is an integer number (121513936).

Almost surely, 2^243027871 is an apocalyptic number.

243027871 is a deficient number, since it is larger than the sum of its proper divisors (1).

243027871 is an equidigital number, since it uses as much as digits as its factorization.

243027871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 243027871 is about 15589.3512052298. The cubic root of 243027871 is about 624.0490036234.

The spelling of 243027871 in words is "two hundred forty-three million, twenty-seven thousand, eight hundred seventy-one".