243243345 has 8 divisors (see below), whose sum is σ = 389189376. Its totient is φ = 129729776.

The previous prime is 243243317. The next prime is 243243353. The reversal of 243243345 is 543342342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243243345 - 2⁵ = 243243313 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8108097 + ... + 8108126.

It is an arithmetic number, because the mean of its divisors is an integer number (48648672).

Almost surely, 2^243243345 is an apocalyptic number.

It is an amenable number.

243243345 is a deficient number, since it is larger than the sum of its proper divisors (145946031).

243243345 is a wasteful number, since it uses less digits than its factorization.

243243345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16216231.

The product of its digits is 34560, while the sum is 30.

The square root of 243243345 is about 15596.2606095179. The cubic root of 243243345 is about 624.2333811239.

Adding to 243243345 its reverse (543342342), we get a palindrome (786585687).

The spelling of 243243345 in words is "two hundred forty-three million, two hundred forty-three thousand, three hundred forty-five".