23187 has 8 divisors (see below), whose sum is σ = 31680. Its totient is φ = 15080.

The previous prime is 23173. The next prime is 23189. The reversal of 23187 is 78132.

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

It is a cyclic number.

It is not a de Polignac number, because 23187 - 2⁷ = 23059 is a prime.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (23189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112 + ... + 242.

It is an arithmetic number, because the mean of its divisors is an integer number (3960).

2²³¹⁸⁷ is an apocalyptic number.

23187 is a deficient number, since it is larger than the sum of its proper divisors (8493).

23187 is a wasteful number, since it uses less digits than its factorization.

23187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193.

The product of its digits is 336, while the sum is 21.

The square root of 23187 is about 152.2727815468. The cubic root of 23187 is about 28.5155347748.

Subtracting 23187 from its reverse (78132), we obtain a palindrome (54945).

It can be divided in two parts, 23 and 187, that added together give a triangular number (210 = T₂₀).

The spelling of 23187 in words is "twenty-three thousand, one hundred eighty-seven".