181112105 has 8 divisors (see below), whose sum is σ = 224829000. Its totient is φ = 139893376.

The previous prime is 181112093. The next prime is 181112119. The reversal of 181112105 is 501211181.

181112105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 39287824 + 141824281 = 6268^2 + 11909^2 .

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 181112105 - 2²⁰ = 180063529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624380 + ... + 624669.

It is an arithmetic number, because the mean of its divisors is an integer number (28103625).

Almost surely, 2^181112105 is an apocalyptic number.

It is an amenable number.

181112105 is a deficient number, since it is larger than the sum of its proper divisors (43716895).

181112105 is a wasteful number, since it uses less digits than its factorization.

181112105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249083.

The product of its (nonzero) digits is 80, while the sum is 20.

The square root of 181112105 is about 13457.7897516643. The cubic root of 181112105 is about 565.7820428381.

Adding to 181112105 its reverse (501211181), we get a palindrome (682323286).

The spelling of 181112105 in words is "one hundred eighty-one million, one hundred twelve thousand, one hundred five".