100871 has 4 divisors (see below), whose sum is σ = 106200. Its totient is φ = 95544.

The previous prime is 100853. The next prime is 100907. The reversal of 100871 is 178001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2636 + ... + 2673.

It is an arithmetic number, because the mean of its divisors is an integer number (26550).

2¹⁰⁰⁸⁷¹ is an apocalyptic number.

100871 is a deficient number, since it is larger than the sum of its proper divisors (5329).

100871 is an equidigital number, since it uses as much as digits as its factorization.

100871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 100871 is about 317.6019521351. The cubic root of 100871 is about 46.5502597587.

Adding to 100871 its reverse (178001), we get a palindrome (278872).

The spelling of 100871 in words is "one hundred thousand, eight hundred seventy-one".