23181697 has 16 divisors (see below), whose sum is σ = 29094912. Its totient is φ = 17943120.

The previous prime is 23181679. The next prime is 23181731. The reversal of 23181697 is 79618132.

It is a cyclic number.

It is not a de Polignac number, because 23181697 - 2¹⁹ = 22657409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23181667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11628 + ... + 13474.

It is an arithmetic number, because the mean of its divisors is an integer number (1818432).

Almost surely, 2^23181697 is an apocalyptic number.

It is an amenable number.

23181697 is a deficient number, since it is larger than the sum of its proper divisors (5913215).

23181697 is a wasteful number, since it uses less digits than its factorization.

23181697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028.

The product of its digits is 18144, while the sum is 37.

The square root of 23181697 is about 4814.7374798633. The cubic root of 23181697 is about 285.1336072027.

The spelling of 23181697 in words is "twenty-three million, one hundred eighty-one thousand, six hundred ninety-seven".