243365241 has 16 divisors (see below), whose sum is σ = 377841024. Its totient is φ = 136441344.

The previous prime is 243365237. The next prime is 243365261. The reversal of 243365241 is 142563342.

It is not a de Polignac number, because 243365241 - 2² = 243365237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243365199 and 243365208.

It is not an unprimeable number, because it can be changed into a prime (243365261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108216 + ... + 110441.

It is an arithmetic number, because the mean of its divisors is an integer number (23615064).

Almost surely, 2^243365241 is an apocalyptic number.

243365241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

243365241 is a deficient number, since it is larger than the sum of its proper divisors (134475783).

243365241 is a wasteful number, since it uses less digits than its factorization.

243365241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218720.

The product of its digits is 17280, while the sum is 30.

The square root of 243365241 is about 15600.1679798648. The cubic root of 243365241 is about 624.3376372756.

The spelling of 243365241 in words is "two hundred forty-three million, three hundred sixty-five thousand, two hundred forty-one".