243232239 has 4 divisors (see below), whose sum is σ = 324309656. Its totient is φ = 162154824.

The previous prime is 243232229. The next prime is 243232259. The reversal of 243232239 is 932232342.

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

It is not a de Polignac number, because 243232239 - 2⁵ = 243232207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243232229) 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, 40538704 + ... + 40538709.

It is an arithmetic number, because the mean of its divisors is an integer number (81077414).

Almost surely, 2^243232239 is an apocalyptic number.

243232239 is a deficient number, since it is larger than the sum of its proper divisors (81077417).

243232239 is an equidigital number, since it uses as much as digits as its factorization.

243232239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81077416.

The product of its digits is 15552, while the sum is 30.

The square root of 243232239 is about 15595.9045585692. The cubic root of 243232239 is about 624.2238805674.

It can be divided in two parts, 24323 and 2239, that added together give a palindrome (26562).

The spelling of 243232239 in words is "two hundred forty-three million, two hundred thirty-two thousand, two hundred thirty-nine".