28831036543 has 4 divisors (see below), whose sum is σ = 28832418520. Its totient is φ = 28829654568.

The previous prime is 28831036529. The next prime is 28831036573. The reversal of 28831036543 is 34563013882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28831036543 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 28831036543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28831036573) 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 3 ways as a sum of consecutive naturals, for example, 659208 + ... + 701581.

It is an arithmetic number, because the mean of its divisors is an integer number (7208104630).

Almost surely, 2^28831036543 is an apocalyptic number.

28831036543 is a deficient number, since it is larger than the sum of its proper divisors (1381977).

28831036543 is a wasteful number, since it uses less digits than its factorization.

28831036543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381976.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 28831036543 in words is "twenty-eight billion, eight hundred thirty-one million, thirty-six thousand, five hundred forty-three".