243143227 has 2 divisors, whose sum is σ = 243143228. Its totient is φ = 243143226.

The previous prime is 243143203. The next prime is 243143233. The reversal of 243143227 is 722341342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243143227 - 2¹¹ = 243141179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243143195 and 243143204.

It is not a weakly prime, because it can be changed into another prime (243143287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121571613 + 121571614.

It is an arithmetic number, because the mean of its divisors is an integer number (121571614).

Almost surely, 2^243143227 is an apocalyptic number.

243143227 is a deficient number, since it is larger than the sum of its proper divisors (1).

243143227 is an equidigital number, since it uses as much as digits as its factorization.

243143227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 28.

The square root of 243143227 is about 15593.0505995459. The cubic root of 243143227 is about 624.1477253730.

Adding to 243143227 its reverse (722341342), we get a palindrome (965484569).

The spelling of 243143227 in words is "two hundred forty-three million, one hundred forty-three thousand, two hundred twenty-seven".