243234313 has 4 divisors (see below), whose sum is σ = 277982080. Its totient is φ = 208486548.

The previous prime is 243234253. The next prime is 243234391. The reversal of 243234313 is 313432342.

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 243234313 - 2¹³ = 243226121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243235313) 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, 17373873 + ... + 17373886.

It is an arithmetic number, because the mean of its divisors is an integer number (69495520).

Almost surely, 2^243234313 is an apocalyptic number.

It is an amenable number.

243234313 is a deficient number, since it is larger than the sum of its proper divisors (34747767).

243234313 is an equidigital number, since it uses as much as digits as its factorization.

243234313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34747766.

The product of its digits is 5184, while the sum is 25.

The square root of 243234313 is about 15595.9710502424. The cubic root of 243234313 is about 624.2256547794.

Adding to 243234313 its reverse (313432342), we get a palindrome (556666655).

The spelling of 243234313 in words is "two hundred forty-three million, two hundred thirty-four thousand, three hundred thirteen".