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13871 = 111397
BaseRepresentation
bin11011000101111
3201000202
43120233
5420441
6144115
755304
oct33057
921022
1013871
11a470
12803b
136410
1450ab
15419b
hex362f

13871 has 8 divisors (see below), whose sum is σ = 16464. Its totient is φ = 11520.

The previous prime is 13859. The next prime is 13873. The reversal of 13871 is 17831.

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 13871 - 26 = 13807 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95 + ... + 191.

It is an arithmetic number, because the mean of its divisors is an integer number (2058).

213871 is an apocalyptic number.

13871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13871 is a deficient number, since it is larger than the sum of its proper divisors (2593).

13871 is a wasteful number, since it uses less digits than its factorization.

13871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121.

The product of its digits is 168, while the sum is 20.

The square root of 13871 is about 117.7752096156. The cubic root of 13871 is about 24.0271683076.

The spelling of 13871 in words is "thirteen thousand, eight hundred seventy-one".

Divisors: 1 11 13 97 143 1067 1261 13871