243153103 has 4 divisors (see below), whose sum is σ = 244170720. Its totient is φ = 242135488.

The previous prime is 243153077. The next prime is 243153109. The reversal of 243153103 is 301351342.

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

It is a cyclic number.

It is not a de Polignac number, because 243153103 - 2¹³ = 243144911 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243153109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508450 + ... + 508927.

It is an arithmetic number, because the mean of its divisors is an integer number (61042680).

Almost surely, 2^243153103 is an apocalyptic number.

243153103 is a deficient number, since it is larger than the sum of its proper divisors (1017617).

243153103 is a wasteful number, since it uses less digits than its factorization.

243153103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017616.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 243153103 is about 15593.3672758644. The cubic root of 243153103 is about 624.1561758099.

The spelling of 243153103 in words is "two hundred forty-three million, one hundred fifty-three thousand, one hundred three".