243359863 has 2 divisors, whose sum is σ = 243359864. Its totient is φ = 243359862.

The previous prime is 243359819. The next prime is 243359873. The reversal of 243359863 is 368953342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243359863 - 2¹³ = 243351671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243359873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121679931 + 121679932.

It is an arithmetic number, because the mean of its divisors is an integer number (121679932).

Almost surely, 2^243359863 is an apocalyptic number.

243359863 is a deficient number, since it is larger than the sum of its proper divisors (1).

243359863 is an equidigital number, since it uses as much as digits as its factorization.

243359863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 43.

The square root of 243359863 is about 15599.9956089737. The cubic root of 243359863 is about 624.3330382725. Note that the first 3 decimals are identical.

The spelling of 243359863 in words is "two hundred forty-three million, three hundred fifty-nine thousand, eight hundred sixty-three".