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3871 = 7279
BaseRepresentation
bin111100011111
312022101
4330133
5110441
625531
714200
oct7437
95271
103871
1129aa
1222a7
1319ba
1415a7
151231
hexf1f

3871 has 6 divisors (see below), whose sum is σ = 4560. Its totient is φ = 3276.

The previous prime is 3863. The next prime is 3877. The reversal of 3871 is 1783.

3871 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 3871 - 23 = 3863 is a prime.

It is a Duffinian number.

3871 is an undulating number in base 16.

It is a plaindrome in base 11.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10 + ... + 88.

It is an arithmetic number, because the mean of its divisors is an integer number (760).

23871 is an apocalyptic number.

3871 is a deficient number, since it is larger than the sum of its proper divisors (689).

3871 is an equidigital number, since it uses as much as digits as its factorization.

3871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 86 counting only the distinct ones).

The product of its digits is 168, while the sum is 19.

The square root of 3871 is about 62.2173609212. The cubic root of 3871 is about 15.7014968754.

The spelling of 3871 in words is "three thousand, eight hundred seventy-one".

Divisors: 1 7 49 79 553 3871