103181 has 4 divisors (see below), whose sum is σ = 111132. Its totient is φ = 95232.

The previous prime is 103177. The next prime is 103183. The reversal of 103181 is 181301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67081 + 36100 = 259^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 103181 - 2² = 103177 is a prime.

It is a super-2 number, since 2×103181² = 21292637522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 103181.

It is not an unprimeable number, because it can be changed into a prime (103183) 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, 3956 + ... + 3981.

It is an arithmetic number, because the mean of its divisors is an integer number (27783).

2¹⁰³¹⁸¹ is an apocalyptic number.

It is an amenable number.

103181 is a deficient number, since it is larger than the sum of its proper divisors (7951).

103181 is an equidigital number, since it uses as much as digits as its factorization.

103181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7950.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 103181 is about 321.2179945146. The cubic root of 103181 is about 46.9029232148.

Adding to 103181 its reverse (181301), we get a palindrome (284482).

The spelling of 103181 in words is "one hundred three thousand, one hundred eighty-one".