243340200139 has 2 divisors, whose sum is σ = 243340200140. Its totient is φ = 243340200138.

The previous prime is 243340200113. The next prime is 243340200151. The reversal of 243340200139 is 931002043342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243340200139 - 2¹⁷ = 243340069067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243340200139.

It is not a weakly prime, because it can be changed into another prime (243340200109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121670100069 + 121670100070.

It is an arithmetic number, because the mean of its divisors is an integer number (121670100070).

Almost surely, 2^243340200139 is an apocalyptic number.

243340200139 is a deficient number, since it is larger than the sum of its proper divisors (1).

243340200139 is an equidigital number, since it uses as much as digits as its factorization.

243340200139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

The spelling of 243340200139 in words is "two hundred forty-three billion, three hundred forty million, two hundred thousand, one hundred thirty-nine".