243143223 has 16 divisors (see below), whose sum is σ = 326472960. Its totient is φ = 160959744.

The previous prime is 243143203. The next prime is 243143227. The reversal of 243143223 is 322341342.

It is not a de Polignac number, because 243143223 - 2⁸ = 243142967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243143193 and 243143202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243143227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464640 + ... + 465162.

It is an arithmetic number, because the mean of its divisors is an integer number (20404560).

Almost surely, 2^243143223 is an apocalyptic number.

243143223 is a deficient number, since it is larger than the sum of its proper divisors (83329737).

243143223 is a wasteful number, since it uses less digits than its factorization.

243143223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318.

The product of its digits is 3456, while the sum is 24.

The square root of 243143223 is about 15593.0504712837. The cubic root of 243143223 is about 624.1477219503.

Adding to 243143223 its reverse (322341342), we get a palindrome (565484565).

It can be divided in two parts, 2431 and 43223, that added together give a palindrome (45654).

The spelling of 243143223 in words is "two hundred forty-three million, one hundred forty-three thousand, two hundred twenty-three".