3117871 has 4 divisors (see below), whose sum is σ = 3150112. Its totient is φ = 3085632.

The previous prime is 3117853. The next prime is 3117889. The reversal of 3117871 is 1787113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1787113 = 73 ⋅24481.

It is an interprime number because it is at equal distance from previous prime (3117853) and next prime (3117889).

It is a cyclic number.

It is not a de Polignac number, because 3117871 - 2¹⁷ = 2986799 is a prime.

It is a super-2 number, since 2×3117871² = 19442239145282, which contains 22 as substring.

It is a Duffinian number.

3117871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3117071) 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, 15975 + ... + 16168.

It is an arithmetic number, because the mean of its divisors is an integer number (787528).

Almost surely, 2^3117871 is an apocalyptic number.

3117871 is a deficient number, since it is larger than the sum of its proper divisors (32241).

3117871 is an equidigital number, since it uses as much as digits as its factorization.

3117871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32240.

The product of its digits is 1176, while the sum is 28.

The square root of 3117871 is about 1765.7494159705. The cubic root of 3117871 is about 146.0896272098.

The spelling of 3117871 in words is "three million, one hundred seventeen thousand, eight hundred seventy-one".