243043030249 has 2 divisors, whose sum is σ = 243043030250. Its totient is φ = 243043030248.

The previous prime is 243043030213. The next prime is 243043030259. The reversal of 243043030249 is 942030340342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126420780249 + 116622250000 = 355557^2 + 341500^2 .

It is a cyclic number.

It is not a de Polignac number, because 243043030249 - 2⁹ = 243043029737 is a prime.

It is not a weakly prime, because it can be changed into another prime (243043030259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121521515124 + 121521515125.

It is an arithmetic number, because the mean of its divisors is an integer number (121521515125).

Almost surely, 2^243043030249 is an apocalyptic number.

It is an amenable number.

243043030249 is a deficient number, since it is larger than the sum of its proper divisors (1).

243043030249 is an equidigital number, since it uses as much as digits as its factorization.

243043030249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 34.

The spelling of 243043030249 in words is "two hundred forty-three billion, forty-three million, thirty thousand, two hundred forty-nine".