243442213111 has 12 divisors (see below), whose sum is σ = 258701347800. Its totient is φ = 229036457600.

The previous prime is 243442213087. The next prime is 243442213141. The reversal of 243442213111 is 111312244342.

It is a happy number.

It is not a de Polignac number, because 243442213111 - 2¹¹ = 243442211063 is a prime.

It is a super-2 number, since 2×243442213111² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243442213111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243442213141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 623961 + ... + 936061.

It is an arithmetic number, because the mean of its divisors is an integer number (21558445650).

Almost surely, 2^243442213111 is an apocalyptic number.

243442213111 is a deficient number, since it is larger than the sum of its proper divisors (15259134689).

243442213111 is a wasteful number, since it uses less digits than its factorization.

243442213111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314834 (or 314817 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

Adding to 243442213111 its reverse (111312244342), we get a palindrome (354754457453).

The spelling of 243442213111 in words is "two hundred forty-three billion, four hundred forty-two million, two hundred thirteen thousand, one hundred eleven".