243121011143 has 8 divisors (see below), whose sum is σ = 249698117040. Its totient is φ = 236544235200.

The previous prime is 243121011139. The next prime is 243121011187. The reversal of 243121011143 is 341110121342.

243121011143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 243121011143 - 2² = 243121011139 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 (243121011193) 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 7 ways as a sum of consecutive naturals, for example, 2440868 + ... + 2538518.

It is an arithmetic number, because the mean of its divisors is an integer number (31212264630).

Almost surely, 2^243121011143 is an apocalyptic number.

243121011143 is a deficient number, since it is larger than the sum of its proper divisors (6577105897).

243121011143 is an equidigital number, since it uses as much as digits as its factorization.

243121011143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164977.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 243121011143 its reverse (341110121342), we get a palindrome (584231132485).

The spelling of 243121011143 in words is "two hundred forty-three billion, one hundred twenty-one million, eleven thousand, one hundred forty-three".