243204230387 has 2 divisors, whose sum is σ = 243204230388. Its totient is φ = 243204230386.

The previous prime is 243204230363. The next prime is 243204230441. The reversal of 243204230387 is 783032402342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243204230387 - 2⁶ = 243204230323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243204230387.

It is not a weakly prime, because it can be changed into another prime (243204230317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121602115193 + 121602115194.

It is an arithmetic number, because the mean of its divisors is an integer number (121602115194).

Almost surely, 2^243204230387 is an apocalyptic number.

243204230387 is a deficient number, since it is larger than the sum of its proper divisors (1).

243204230387 is an equidigital number, since it uses as much as digits as its factorization.

243204230387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 38.

The spelling of 243204230387 in words is "two hundred forty-three billion, two hundred four million, two hundred thirty thousand, three hundred eighty-seven".