243111241 has 4 divisors (see below), whose sum is σ = 244967184. Its totient is φ = 241255300.

The previous prime is 243111229. The next prime is 243111283. The reversal of 243111241 is 142111342.

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 243111241 - 2¹⁷ = 242980169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243114241) 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, 927775 + ... + 928036.

It is an arithmetic number, because the mean of its divisors is an integer number (61241796).

Almost surely, 2^243111241 is an apocalyptic number.

It is an amenable number.

243111241 is a deficient number, since it is larger than the sum of its proper divisors (1855943).

243111241 is a wasteful number, since it uses less digits than its factorization.

243111241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855942.

The product of its digits is 192, while the sum is 19.

The square root of 243111241 is about 15592.0249166040. The cubic root of 243111241 is about 624.1203548599.

Adding to 243111241 its reverse (142111342), we get a palindrome (385222583).

It can be divided in two parts, 24311 and 1241, that added together give a palindrome (25552).

The spelling of 243111241 in words is "two hundred forty-three million, one hundred eleven thousand, two hundred forty-one".