100843 has 4 divisors (see below), whose sum is σ = 104128. Its totient is φ = 97560.

The previous prime is 100829. The next prime is 100847. The reversal of 100843 is 348001.

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

It is a cyclic number.

It is not a de Polignac number, because 100843 - 2⁵ = 100811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100847) 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, 1596 + ... + 1657.

It is an arithmetic number, because the mean of its divisors is an integer number (26032).

2¹⁰⁰⁸⁴³ is an apocalyptic number.

100843 is a deficient number, since it is larger than the sum of its proper divisors (3285).

100843 is an equidigital number, since it uses as much as digits as its factorization.

100843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 100843 is about 317.5578687421. The cubic root of 100843 is about 46.5459521847.

Adding to 100843 its reverse (348001), we get a palindrome (448844).

The spelling of 100843 in words is "one hundred thousand, eight hundred forty-three".