243143302143 has 16 divisors (see below), whose sum is σ = 378065388800. Its totient is φ = 138939029208.

The previous prime is 243143302123. The next prime is 243143302151. The reversal of 243143302143 is 341203341342.

It is a happy number.

It is not a de Polignac number, because 243143302143 - 2⁶ = 243143302079 is a prime.

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 243143302143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243143302123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118144405 + ... + 118146462.

It is an arithmetic number, because the mean of its divisors is an integer number (23629086800).

Almost surely, 2^243143302143 is an apocalyptic number.

243143302143 is a deficient number, since it is larger than the sum of its proper divisors (134922086657).

243143302143 is an equidigital number, since it uses as much as digits as its factorization.

243143302143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236290891 (or 236290877 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 243143302143 its reverse (341203341342), we get a palindrome (584346643485).

The spelling of 243143302143 in words is "two hundred forty-three billion, one hundred forty-three million, three hundred two thousand, one hundred forty-three".