243413243 has 4 divisors (see below), whose sum is σ = 245190120. Its totient is φ = 241636368.

The previous prime is 243413231. The next prime is 243413257. The reversal of 243413243 is 342314342.

243413243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 243413243 - 2¹⁰ = 243412219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243413273) 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, 888233 + ... + 888506.

It is an arithmetic number, because the mean of its divisors is an integer number (61297530).

Almost surely, 2^243413243 is an apocalyptic number.

243413243 is a deficient number, since it is larger than the sum of its proper divisors (1776877).

243413243 is a wasteful number, since it uses less digits than its factorization.

243413243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776876.

The product of its digits is 6912, while the sum is 26.

The square root of 243413243 is about 15601.7064130819. The cubic root of 243413243 is about 624.3786832428.

Adding to 243413243 its reverse (342314342), we get a palindrome (585727585).

The spelling of 243413243 in words is "two hundred forty-three million, four hundred thirteen thousand, two hundred forty-three".