2143251543 has 16 divisors (see below), whose sum is σ = 2902718720. Its totient is φ = 1406344896.

The previous prime is 2143251521. The next prime is 2143251563. The reversal of 2143251543 is 3451523412.

It is not a de Polignac number, because 2143251543 - 2¹⁰ = 2143250519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2143251543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143251503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287163 + ... + 294531.

It is an arithmetic number, because the mean of its divisors is an integer number (181419920).

Almost surely, 2^2143251543 is an apocalyptic number.

2143251543 is a deficient number, since it is larger than the sum of its proper divisors (759467177).

2143251543 is a wasteful number, since it uses less digits than its factorization.

2143251543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8886.

The product of its digits is 14400, while the sum is 30.

The square root of 2143251543 is about 46295.2648010571. The cubic root of 2143251543 is about 1289.3110803809.

Adding to 2143251543 its reverse (3451523412), we get a palindrome (5594774955).

The spelling of 2143251543 in words is "two billion, one hundred forty-three million, two hundred fifty-one thousand, five hundred forty-three".