23822161 has 4 divisors (see below), whose sum is σ = 25987824. Its totient is φ = 21656500.

The previous prime is 23822131. The next prime is 23822171. The reversal of 23822161 is 16122832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23822161 - 2¹¹ = 23820113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23822131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1082815 + ... + 1082836.

It is an arithmetic number, because the mean of its divisors is an integer number (6496956).

Almost surely, 2^23822161 is an apocalyptic number.

It is an amenable number.

23822161 is a deficient number, since it is larger than the sum of its proper divisors (2165663).

23822161 is a wasteful number, since it uses less digits than its factorization.

23822161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165662.

The product of its digits is 1152, while the sum is 25.

The square root of 23822161 is about 4880.7951196501. The cubic root of 23822161 is about 287.7356797153.

Adding to 23822161 its reverse (16122832), we get a palindrome (39944993).

The spelling of 23822161 in words is "twenty-three million, eight hundred twenty-two thousand, one hundred sixty-one".