23163261 has 16 divisors (see below), whose sum is σ = 35466240. Its totient is φ = 13299120.

The previous prime is 23163241. The next prime is 23163271. The reversal of 23163261 is 16236132.

It is a happy number.

It is not a de Polignac number, because 23163261 - 2¹⁵ = 23130493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23163241) 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, 17845 + ... + 19098.

It is an arithmetic number, because the mean of its divisors is an integer number (2216640).

Almost surely, 2^23163261 is an apocalyptic number.

It is an amenable number.

23163261 is a deficient number, since it is larger than the sum of its proper divisors (12302979).

23163261 is a wasteful number, since it uses less digits than its factorization.

23163261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36976.

The product of its digits is 1296, while the sum is 24.

The square root of 23163261 is about 4812.8225606187. The cubic root of 23163261 is about 285.0579998916.

Adding to 23163261 its reverse (16236132), we get a palindrome (39399393).

The spelling of 23163261 in words is "twenty-three million, one hundred sixty-three thousand, two hundred sixty-one".