28531214843 has 2 divisors, whose sum is σ = 28531214844. Its totient is φ = 28531214842.

The previous prime is 28531214779. The next prime is 28531214911. The reversal of 28531214843 is 34841213582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28531214843 - 2⁶ = 28531214779 is a prime.

It is a super-4 number, since 4×28531214843⁴ (a number of 43 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28531214843.

It is not a weakly prime, because it can be changed into another prime (28531234843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14265607421 + 14265607422.

It is an arithmetic number, because the mean of its divisors is an integer number (14265607422).

Almost surely, 2^28531214843 is an apocalyptic number.

28531214843 is a deficient number, since it is larger than the sum of its proper divisors (1).

28531214843 is an equidigital number, since it uses as much as digits as its factorization.

28531214843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 41.

The spelling of 28531214843 in words is "twenty-eight billion, five hundred thirty-one million, two hundred fourteen thousand, eight hundred forty-three".