243120231143 has 4 divisors (see below), whose sum is σ = 243149626608. Its totient is φ = 243090835680.

The previous prime is 243120231091. The next prime is 243120231191. The reversal of 243120231143 is 341132021342.

243120231143 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 not a de Polignac number, because 243120231143 - 2²⁰ = 243119182567 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 (243120231443) 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, 14685323 + ... + 14701868.

It is an arithmetic number, because the mean of its divisors is an integer number (60787406652).

Almost surely, 2^243120231143 is an apocalyptic number.

243120231143 is a deficient number, since it is larger than the sum of its proper divisors (29395465).

243120231143 is an equidigital number, since it uses as much as digits as its factorization.

243120231143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29395464.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 243120231143 its reverse (341132021342), we get a palindrome (584252252485).

The spelling of 243120231143 in words is "two hundred forty-three billion, one hundred twenty million, two hundred thirty-one thousand, one hundred forty-three".