28338547231 has 2 divisors, whose sum is σ = 28338547232. Its totient is φ = 28338547230.

The previous prime is 28338547219. The next prime is 28338547247. The reversal of 28338547231 is 13274583382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28338547231 - 2¹⁷ = 28338416159 is a prime.

It is a super-2 number, since 2×28338547231² (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 (28338547031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14169273615 + 14169273616.

It is an arithmetic number, because the mean of its divisors is an integer number (14169273616).

Almost surely, 2^28338547231 is an apocalyptic number.

28338547231 is a deficient number, since it is larger than the sum of its proper divisors (1).

28338547231 is an equidigital number, since it uses as much as digits as its factorization.

28338547231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 46.

The spelling of 28338547231 in words is "twenty-eight billion, three hundred thirty-eight million, five hundred forty-seven thousand, two hundred thirty-one".