243230113 has 4 divisors (see below), whose sum is σ = 277977280. Its totient is φ = 208482948.

The previous prime is 243230111. The next prime is 243230137. The reversal of 243230113 is 311032342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243230113 - 2¹ = 243230111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243230111) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17373573 + ... + 17373586.

It is an arithmetic number, because the mean of its divisors is an integer number (69494320).

Almost surely, 2^243230113 is an apocalyptic number.

It is an amenable number.

243230113 is a deficient number, since it is larger than the sum of its proper divisors (34747167).

243230113 is an equidigital number, since it uses as much as digits as its factorization.

243230113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34747166.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 243230113 is about 15595.8363995010. The cubic root of 243230113 is about 624.2220618614. Note that the first 3 decimals are identical.

Adding to 243230113 its reverse (311032342), we get a palindrome (554262455).

The spelling of 243230113 in words is "two hundred forty-three million, two hundred thirty thousand, one hundred thirteen".