23240161 has 6 divisors (see below), whose sum is σ = 27034530. Its totient is φ = 19920096.

The previous prime is 23240149. The next prime is 23240171. The reversal of 23240161 is 16104232.

It can be written as a sum of positive squares in only one way, i.e., 12645136 + 10595025 = 3556^2 + 3255^2 .

It is not a de Polignac number, because 23240161 - 2¹¹ = 23238113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23240101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 237096 + ... + 237193.

It is an arithmetic number, because the mean of its divisors is an integer number (4505755).

Almost surely, 2^23240161 is an apocalyptic number.

It is an amenable number.

23240161 is a deficient number, since it is larger than the sum of its proper divisors (3794369).

23240161 is an equidigital number, since it uses as much as digits as its factorization.

23240161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474303 (or 474296 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 23240161 is about 4820.8050157624. The cubic root of 23240161 is about 285.3731073122.

Adding to 23240161 its reverse (16104232), we get a palindrome (39344393).

The spelling of 23240161 in words is "twenty-three million, two hundred forty thousand, one hundred sixty-one".