243313144 has 8 divisors (see below), whose sum is σ = 456212160. Its totient is φ = 121656568.

The previous prime is 243313117. The next prime is 243313153. The reversal of 243313144 is 441313342.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15207064 + ... + 15207079.

It is an arithmetic number, because the mean of its divisors is an integer number (57026520).

Almost surely, 2^243313144 is an apocalyptic number.

It is an amenable number.

243313144 is a deficient number, since it is larger than the sum of its proper divisors (212899016).

243313144 is a wasteful number, since it uses less digits than its factorization.

243313144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30414149 (or 30414145 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 243313144 is about 15598.4981328332. The cubic root of 243313144 is about 624.2930836122.

Adding to 243313144 its reverse (441313342), we get a palindrome (684626486).

The spelling of 243313144 in words is "two hundred forty-three million, three hundred thirteen thousand, one hundred forty-four".