108813 has 16 divisors (see below), whose sum is σ = 161280. Its totient is φ = 64944.

The previous prime is 108803. The next prime is 108821. The reversal of 108813 is 318801.

It is a happy number.

It is not a de Polignac number, because 108813 - 2⁸ = 108557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1270 + ... + 1352.

It is an arithmetic number, because the mean of its divisors is an integer number (10080).

2¹⁰⁸⁸¹³ is an apocalyptic number.

It is an amenable number.

108813 is a deficient number, since it is larger than the sum of its proper divisors (52467).

108813 is a wasteful number, since it uses less digits than its factorization.

108813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 108813 is about 329.8681554803. The cubic root of 108813 is about 47.7412289839.

The spelling of 108813 in words is "one hundred eight thousand, eight hundred thirteen".