23271165 has 32 divisors (see below), whose sum is σ = 41610240. Its totient is φ = 12339648.

The previous prime is 23271139. The next prime is 23271167. The reversal of 23271165 is 56117232.

It is a happy number.

It is not a de Polignac number, because 23271165 - 2⁵ = 23271133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23271167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29719 + ... + 30491.

It is an arithmetic number, because the mean of its divisors is an integer number (1300320).

Almost surely, 2^23271165 is an apocalyptic number.

It is an amenable number.

23271165 is a deficient number, since it is larger than the sum of its proper divisors (18339075).

23271165 is a wasteful number, since it uses less digits than its factorization.

23271165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010 (or 1004 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 23271165 is about 4824.0195895125. The cubic root of 23271165 is about 285.4999534823.

Adding to 23271165 its reverse (56117232), we get a palindrome (79388397).

It can be divided in two parts, 23271 and 165, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 23271165 in words is "twenty-three million, two hundred seventy-one thousand, one hundred sixty-five".