110728109 has 2 divisors, whose sum is σ = 110728110. Its totient is φ = 110728108.

The previous prime is 110728043. The next prime is 110728127. The reversal of 110728109 is 901827011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110712484 + 15625 = 10522^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 110728109 - 2⁸ = 110727853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110728159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55364054 + 55364055.

It is an arithmetic number, because the mean of its divisors is an integer number (55364055).

Almost surely, 2^110728109 is an apocalyptic number.

It is an amenable number.

110728109 is a deficient number, since it is larger than the sum of its proper divisors (1).

110728109 is an equidigital number, since it uses as much as digits as its factorization.

110728109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 110728109 is about 10522.7424657263. The cubic root of 110728109 is about 480.1968362273.

The spelling of 110728109 in words is "one hundred ten million, seven hundred twenty-eight thousand, one hundred nine".