3171887 has 4 divisors (see below), whose sum is σ = 3184776. Its totient is φ = 3159000.

The previous prime is 3171881. The next prime is 3171893. The reversal of 3171887 is 7881713.

3171887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (3171881) and next prime (3171893).

It is a cyclic number.

It is not a de Polignac number, because 3171887 - 2⁶ = 3171823 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 (3171881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6068 + ... + 6569.

It is an arithmetic number, because the mean of its divisors is an integer number (796194).

Almost surely, 2^3171887 is an apocalyptic number.

3171887 is a deficient number, since it is larger than the sum of its proper divisors (12889).

3171887 is a wasteful number, since it uses less digits than its factorization.

3171887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12888.

The product of its digits is 9408, while the sum is 35.

The square root of 3171887 is about 1780.9792250332. The cubic root of 3171887 is about 146.9284517689.

The spelling of 3171887 in words is "three million, one hundred seventy-one thousand, eight hundred eighty-seven".