243144103 has 4 divisors (see below), whose sum is σ = 243779328. Its totient is φ = 242508880.

The previous prime is 243144073. The next prime is 243144107. The reversal of 243144103 is 301441342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301441342 = 2 ⋅150720671.

It is a cyclic number.

It is not a de Polignac number, because 243144103 - 2⁵ = 243144071 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 (243144107) 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, 317038 + ... + 317803.

It is an arithmetic number, because the mean of its divisors is an integer number (60944832).

Almost surely, 2^243144103 is an apocalyptic number.

243144103 is a deficient number, since it is larger than the sum of its proper divisors (635225).

243144103 is an equidigital number, since it uses as much as digits as its factorization.

243144103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635224.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 243144103 is about 15593.0786889568. The cubic root of 243144103 is about 624.1484749350.

Adding to 243144103 its reverse (301441342), we get a palindrome (544585445).

The spelling of 243144103 in words is "two hundred forty-three million, one hundred forty-four thousand, one hundred three".