243048239 has 4 divisors (see below), whose sum is σ = 277769424. Its totient is φ = 208327056.

The previous prime is 243048229. The next prime is 243048251. The reversal of 243048239 is 932840342.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-243048239 is a prime.

It is a super-2 number, since 2×243048239² = 118144892962002242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243048199 and 243048208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243048229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17360582 + ... + 17360595.

It is an arithmetic number, because the mean of its divisors is an integer number (69442356).

Almost surely, 2^243048239 is an apocalyptic number.

243048239 is a deficient number, since it is larger than the sum of its proper divisors (34721185).

243048239 is an equidigital number, since it uses as much as digits as its factorization.

243048239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34721184.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 243048239 is about 15590.0044579853. The cubic root of 243048239 is about 624.0664368434.

The spelling of 243048239 in words is "two hundred forty-three million, forty-eight thousand, two hundred thirty-nine".