243120353297 has 2 divisors, whose sum is σ = 243120353298. Its totient is φ = 243120353296.

The previous prime is 243120353269. The next prime is 243120353353. The reversal of 243120353297 is 792353021342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210200242576 + 32920110721 = 458476^2 + 181439^2 .

It is a cyclic number.

It is not a de Polignac number, because 243120353297 - 2⁸ = 243120353041 is a prime.

It is not a weakly prime, because it can be changed into another prime (243120353797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121560176648 + 121560176649.

It is an arithmetic number, because the mean of its divisors is an integer number (121560176649).

Almost surely, 2^243120353297 is an apocalyptic number.

It is an amenable number.

243120353297 is a deficient number, since it is larger than the sum of its proper divisors (1).

243120353297 is an equidigital number, since it uses as much as digits as its factorization.

243120353297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 41.

The spelling of 243120353297 in words is "two hundred forty-three billion, one hundred twenty million, three hundred fifty-three thousand, two hundred ninety-seven".