243320252111 has 4 divisors (see below), whose sum is σ = 244870062792. Its totient is φ = 241770441432.

The previous prime is 243320252099. The next prime is 243320252143. The reversal of 243320252111 is 111252023342.

243320252111 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 a de Polignac number, because none of the positive numbers 2^k-243320252111 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 (243320252611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774905105 + ... + 774905418.

It is an arithmetic number, because the mean of its divisors is an integer number (61217515698).

Almost surely, 2^243320252111 is an apocalyptic number.

243320252111 is a deficient number, since it is larger than the sum of its proper divisors (1549810681).

243320252111 is a wasteful number, since it uses less digits than its factorization.

243320252111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549810680.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 243320252111 its reverse (111252023342), we get a palindrome (354572275453).

The spelling of 243320252111 in words is "two hundred forty-three billion, three hundred twenty million, two hundred fifty-two thousand, one hundred eleven".