203543159243 has 4 divisors (see below), whose sum is σ = 203790478608. Its totient is φ = 203295839880.

The previous prime is 203543159233. The next prime is 203543159257. The reversal of 203543159243 is 342951345302.

203543159243 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 203543159243 - 2¹⁶ = 203543093707 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 203543159243.

It is not an unprimeable number, because it can be changed into a prime (203543159203) 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, 123658448 + ... + 123660093.

It is an arithmetic number, because the mean of its divisors is an integer number (50947619652).

Almost surely, 2^203543159243 is an apocalyptic number.

203543159243 is a deficient number, since it is larger than the sum of its proper divisors (247319365).

203543159243 is an equidigital number, since it uses as much as digits as its factorization.

203543159243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247319364.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 203543159243 in words is "two hundred three billion, five hundred forty-three million, one hundred fifty-nine thousand, two hundred forty-three".