28843530031 has 4 divisors (see below), whose sum is σ = 28844016232. Its totient is φ = 28843043832.

The previous prime is 28843530017. The next prime is 28843530047. The reversal of 28843530031 is 13003534882.

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 28843530031 - 2⁵ = 28843529999 is a prime.

It is a super-2 number, since 2×28843530031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28840530031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139356 + ... + 277681.

It is an arithmetic number, because the mean of its divisors is an integer number (7211004058).

Almost surely, 2^28843530031 is an apocalyptic number.

28843530031 is a deficient number, since it is larger than the sum of its proper divisors (486201).

28843530031 is an equidigital number, since it uses as much as digits as its factorization.

28843530031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486200.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 28843530031 in words is "twenty-eight billion, eight hundred forty-three million, five hundred thirty thousand, thirty-one".