28769322031 has 2 divisors, whose sum is σ = 28769322032. Its totient is φ = 28769322030.

The previous prime is 28769322013. The next prime is 28769322107. The reversal of 28769322031 is 13022396782.

Together with previous prime (28769322013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28769322031 - 2⁹ = 28769321519 is a prime.

It is a super-2 number, since 2×28769322031² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28769326031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14384661015 + 14384661016.

It is an arithmetic number, because the mean of its divisors is an integer number (14384661016).

Almost surely, 2^28769322031 is an apocalyptic number.

28769322031 is a deficient number, since it is larger than the sum of its proper divisors (1).

28769322031 is an equidigital number, since it uses as much as digits as its factorization.

28769322031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 28769322031 in words is "twenty-eight billion, seven hundred sixty-nine million, three hundred twenty-two thousand, thirty-one".