81110 has 8 divisors (see below), whose sum is σ = 146016. Its totient is φ = 32440.

The previous prime is 81101. The next prime is 81119. The reversal of 81110 is 1118.

It is an interprime number because it is at equal distance from previous prime (81101) and next prime (81119).

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

It is a Curzon number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 81091 and 81100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81119) 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, 4046 + ... + 4065.

It is an arithmetic number, because the mean of its divisors is an integer number (18252).

2⁸¹¹¹⁰ is an apocalyptic number.

81110 is a deficient number, since it is larger than the sum of its proper divisors (64906).

81110 is a wasteful number, since it uses less digits than its factorization.

81110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8118.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 81110 is about 284.7981741515. The cubic root of 81110 is about 43.2870643550.

Adding to 81110 its reverse (1118), we get a palindrome (82228).

It can be divided in two parts, 81 and 110, that added together give a palindrome (191).

The spelling of 81110 in words is "eighty-one thousand, one hundred ten".