243340063 has 2 divisors, whose sum is σ = 243340064. Its totient is φ = 243340062.

The previous prime is 243340021. The next prime is 243340067. The reversal of 243340063 is 360043342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243340063 - 2¹⁷ = 243208991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243340067) 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, 121670031 + 121670032.

It is an arithmetic number, because the mean of its divisors is an integer number (121670032).

Almost surely, 2^243340063 is an apocalyptic number.

243340063 is a deficient number, since it is larger than the sum of its proper divisors (1).

243340063 is an equidigital number, since it uses as much as digits as its factorization.

243340063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 243340063 is about 15599.3609805017. The cubic root of 243340063 is about 624.3161056947.

The spelling of 243340063 in words is "two hundred forty-three million, three hundred forty thousand, sixty-three".