243339 has 8 divisors (see below), whose sum is σ = 335760. Its totient is φ = 156576.

The previous prime is 243311. The next prime is 243343. The reversal of 243339 is 933342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243339 - 2¹¹ = 241291 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1312 + ... + 1485.

It is an arithmetic number, because the mean of its divisors is an integer number (41970).

2²⁴³³³⁹ is an apocalyptic number.

243339 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

243339 is a deficient number, since it is larger than the sum of its proper divisors (92421).

243339 is a wasteful number, since it uses less digits than its factorization.

243339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829.

The product of its digits is 1944, while the sum is 24.

The square root of 243339 is about 493.2940299659. The cubic root of 243339 is about 62.4315196612.

It can be divided in two parts, 24333 and 9, that added together give a palindrome (24342).

The spelling of 243339 in words is "two hundred forty-three thousand, three hundred thirty-nine".