243242227 has 16 divisors (see below), whose sum is σ = 266538240. Its totient is φ = 221249952.

The previous prime is 243242203. The next prime is 243242231. The reversal of 243242227 is 722242342.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243242227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243242195 and 243242204.

It is not an unprimeable number, because it can be changed into a prime (243242257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41968 + ... + 47410.

It is an arithmetic number, because the mean of its divisors is an integer number (16658640).

Almost surely, 2^243242227 is an apocalyptic number.

243242227 is a deficient number, since it is larger than the sum of its proper divisors (23296013).

243242227 is a wasteful number, since it uses less digits than its factorization.

243242227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5562.

The product of its digits is 10752, while the sum is 28.

The square root of 243242227 is about 15596.2247675519. The cubic root of 243242227 is about 624.2324247511.

Adding to 243242227 its reverse (722242342), we get a palindrome (965484569).

The spelling of 243242227 in words is "two hundred forty-three million, two hundred forty-two thousand, two hundred twenty-seven".