243361297 has 2 divisors, whose sum is σ = 243361298. Its totient is φ = 243361296.

The previous prime is 243361289. The next prime is 243361343. The reversal of 243361297 is 792163342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241833601 + 1527696 = 15551^2 + 1236^2 .

It is a cyclic number.

It is not a de Polignac number, because 243361297 - 2³ = 243361289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (243361697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121680648 + 121680649.

It is an arithmetic number, because the mean of its divisors is an integer number (121680649).

Almost surely, 2^243361297 is an apocalyptic number.

It is an amenable number.

243361297 is a deficient number, since it is larger than the sum of its proper divisors (1).

243361297 is an equidigital number, since it uses as much as digits as its factorization.

243361297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 243361297 is about 15600.0415704574. The cubic root of 243361297 is about 624.3342645659.

The spelling of 243361297 in words is "two hundred forty-three million, three hundred sixty-one thousand, two hundred ninety-seven".