243440012111 has 8 divisors (see below), whose sum is σ = 249715057200. Its totient is φ = 237181037760.

The previous prime is 243440012033. The next prime is 243440012113. The reversal of 243440012111 is 111210044342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243440012111 - 2¹⁸ = 243439749967 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 (243440012113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3986996 + ... + 4047593.

It is an arithmetic number, because the mean of its divisors is an integer number (31214382150).

Almost surely, 2^243440012111 is an apocalyptic number.

243440012111 is a deficient number, since it is larger than the sum of its proper divisors (6275045089).

243440012111 is an equidigital number, since it uses as much as digits as its factorization.

243440012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8035369.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 243440012111 its reverse (111210044342), we get a palindrome (354650056453).

The spelling of 243440012111 in words is "two hundred forty-three billion, four hundred forty million, twelve thousand, one hundred eleven".