243823441 has 4 divisors (see below), whose sum is σ = 244159552. Its totient is φ = 243487332.

The previous prime is 243823429. The next prime is 243823457. The reversal of 243823441 is 144328342.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243823441 - 2⁷ = 243823313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243823141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166965 + ... + 168418.

It is an arithmetic number, because the mean of its divisors is an integer number (61039888).

Almost surely, 2^243823441 is an apocalyptic number.

It is an amenable number.

243823441 is a deficient number, since it is larger than the sum of its proper divisors (336111).

243823441 is an equidigital number, since it uses as much as digits as its factorization.

243823441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336110.

The product of its digits is 18432, while the sum is 31.

The square root of 243823441 is about 15614.8468132095. The cubic root of 243823441 is about 624.7292190212.

The spelling of 243823441 in words is "two hundred forty-three million, eight hundred twenty-three thousand, four hundred forty-one".