243733241 has 2 divisors, whose sum is σ = 243733242. Its totient is φ = 243733240.

The previous prime is 243733213. The next prime is 243733271. The reversal of 243733241 is 142337342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233967616 + 9765625 = 15296^2 + 3125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243733241 is a prime.

It is not a weakly prime, because it can be changed into another prime (243733201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121866620 + 121866621.

It is an arithmetic number, because the mean of its divisors is an integer number (121866621).

Almost surely, 2^243733241 is an apocalyptic number.

It is an amenable number.

243733241 is a deficient number, since it is larger than the sum of its proper divisors (1).

243733241 is an equidigital number, since it uses as much as digits as its factorization.

243733241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 29.

The square root of 243733241 is about 15611.9582692243. The cubic root of 243733241 is about 624.6521721145.

The spelling of 243733241 in words is "two hundred forty-three million, seven hundred thirty-three thousand, two hundred forty-one".