108181 has 4 divisors (see below), whose sum is σ = 108864. Its totient is φ = 107500.

The previous prime is 108179. The next prime is 108187. The reversal of 108181 is 181801.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 181801 = 29 ⋅6269.

It is a cyclic number.

It is not a de Polignac number, because 108181 - 2¹ = 108179 is a prime.

It is a super-2 number, since 2×108181² = 23406257522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108187) 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, 36 + ... + 466.

It is an arithmetic number, because the mean of its divisors is an integer number (27216).

2¹⁰⁸¹⁸¹ is an apocalyptic number.

It is an amenable number.

108181 is a deficient number, since it is larger than the sum of its proper divisors (683).

108181 is an equidigital number, since it uses as much as digits as its factorization.

108181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682.

The product of its (nonzero) digits is 64, while the sum is 19.

The square root of 108181 is about 328.9088019497. The cubic root of 108181 is about 47.6486203767.

Adding to 108181 its reverse (181801), we get a palindrome (289982).

It can be divided in two parts, 108 and 181, that added together give a square (289 = 17²).

The spelling of 108181 in words is "one hundred eight thousand, one hundred eighty-one".