23109085 has 16 divisors (see below), whose sum is σ = 28868400. Its totient is φ = 17737216.

The previous prime is 23109083. The next prime is 23109091. The reversal of 23109085 is 58090132.

It can be written as a sum of positive squares in 8 ways, for example, as 4901796 + 18207289 = 2214^2 + 4267^2 .

It is a cyclic number.

It is not a de Polignac number, because 23109085 - 2¹ = 23109083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23109083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28161 + ... + 28969.

It is an arithmetic number, because the mean of its divisors is an integer number (1804275).

Almost surely, 2^23109085 is an apocalyptic number.

It is an amenable number.

23109085 is a deficient number, since it is larger than the sum of its proper divisors (5759315).

23109085 is a wasteful number, since it uses less digits than its factorization.

23109085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 23109085 is about 4807.1909677066. The cubic root of 23109085 is about 284.8355879457.

The spelling of 23109085 in words is "twenty-three million, one hundred nine thousand, eighty-five".