243204341 has 2 divisors, whose sum is σ = 243204342. Its totient is φ = 243204340.

The previous prime is 243204301. The next prime is 243204347. The reversal of 243204341 is 143402342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220403716 + 22800625 = 14846^2 + 4775^2 .

It is a cyclic number.

It is not a de Polignac number, because 243204341 - 2¹⁸ = 242942197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243204347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121602170 + 121602171.

It is an arithmetic number, because the mean of its divisors is an integer number (121602171).

Almost surely, 2^243204341 is an apocalyptic number.

It is an amenable number.

243204341 is a deficient number, since it is larger than the sum of its proper divisors (1).

243204341 is an equidigital number, since it uses as much as digits as its factorization.

243204341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 243204341 is about 15595.0101314491. The cubic root of 243204341 is about 624.2000141264.

Adding to 243204341 its reverse (143402342), we get a palindrome (386606683).

The spelling of 243204341 in words is "two hundred forty-three million, two hundred four thousand, three hundred forty-one".