28810750231 has 2 divisors, whose sum is σ = 28810750232. Its totient is φ = 28810750230.

The previous prime is 28810750229. The next prime is 28810750261. The reversal of 28810750231 is 13205701882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28810750231 - 2¹ = 28810750229 is a prime.

It is a super-2 number, since 2×28810750231² (a number of 22 digits) contains 22 as substring.

Together with 28810750229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28810750261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14405375115 + 14405375116.

It is an arithmetic number, because the mean of its divisors is an integer number (14405375116).

Almost surely, 2^28810750231 is an apocalyptic number.

28810750231 is a deficient number, since it is larger than the sum of its proper divisors (1).

28810750231 is an equidigital number, since it uses as much as digits as its factorization.

28810750231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 28810750231 in words is "twenty-eight billion, eight hundred ten million, seven hundred fifty thousand, two hundred thirty-one".