28030005031 has 6 divisors (see below), whose sum is σ = 32606332440. Its totient is φ = 24025718556.

The previous prime is 28030005001. The next prime is 28030005043. The reversal of 28030005031 is 13050003082.

It is not a de Polignac number, because 28030005031 - 2¹⁵ = 28029972263 is a prime.

It is a super-2 number, since 2×28030005031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28030004993 and 28030005011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28030005001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 286020411 + ... + 286020508.

It is an arithmetic number, because the mean of its divisors is an integer number (5434388740).

Almost surely, 2^28030005031 is an apocalyptic number.

28030005031 is a deficient number, since it is larger than the sum of its proper divisors (4576327409).

28030005031 is an equidigital number, since it uses as much as digits as its factorization.

28030005031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572040933 (or 572040926 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The spelling of 28030005031 in words is "twenty-eight billion, thirty million, five thousand, thirty-one".