243144323 has 4 divisors (see below), whose sum is σ = 251528640. Its totient is φ = 234760008.

The previous prime is 243144313. The next prime is 243144379. The reversal of 243144323 is 323441342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243144323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243144292 and 243144301.

It is not an unprimeable number, because it can be changed into a prime (243144313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4192115 + ... + 4192172.

It is an arithmetic number, because the mean of its divisors is an integer number (62882160).

Almost surely, 2^243144323 is an apocalyptic number.

243144323 is a deficient number, since it is larger than the sum of its proper divisors (8384317).

243144323 is an equidigital number, since it uses as much as digits as its factorization.

243144323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8384316.

The product of its digits is 6912, while the sum is 26.

The square root of 243144323 is about 15593.0857433672. The cubic root of 243144323 is about 624.1486631809.

Adding to 243144323 its reverse (323441342), we get a palindrome (566585665).

The spelling of 243144323 in words is "two hundred forty-three million, one hundred forty-four thousand, three hundred twenty-three".