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23118 = 233853

23118 has 8 divisors (see below), whose sum is σ = 46248. Its totient is φ = 7704.

The previous prime is 23117. The next prime is 23131. The reversal of 23118 is 81132.

It can be divided in two parts, 23 and 118, that added together give a palindrome (141).

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

23118 is an admirable number.

It is a Curzon number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 23097 and 23106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23117) 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, 1921 + ... + 1932.

It is an arithmetic number, because the mean of its divisors is an integer number (5781).

223118 is an apocalyptic number.

23118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23124).

23118 is a wasteful number, since it uses less digits than its factorization.

23118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3858.

The product of its digits is 48, while the sum is 15.

The square root of 23118 is about 152.0460456572. The cubic root of 23118 is about 28.4872211101.

The spelling of 23118 in words is "twenty-three thousand, one hundred eighteen".

Divisors: 1 2 3 6 3853 7706 11559 23118