243116441 has 4 divisors (see below), whose sum is σ = 243190032. Its totient is φ = 243042852.

The previous prime is 243116437. The next prime is 243116443. The reversal of 243116441 is 144611342.

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 243116441 - 2² = 243116437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 243116441.

It is not an unprimeable number, because it can be changed into a prime (243116443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31595 + ... + 38528.

It is an arithmetic number, because the mean of its divisors is an integer number (60797508).

Almost surely, 2^243116441 is an apocalyptic number.

It is an amenable number.

243116441 is a deficient number, since it is larger than the sum of its proper divisors (73591).

243116441 is an equidigital number, since it uses as much as digits as its factorization.

243116441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73590.

The product of its digits is 2304, while the sum is 26.

The square root of 243116441 is about 15592.1916676265. The cubic root of 243116441 is about 624.1248046784.

Adding to 243116441 its reverse (144611342), we get a palindrome (387727783).

The spelling of 243116441 in words is "two hundred forty-three million, one hundred sixteen thousand, four hundred forty-one".