3871071 has 10 divisors (see below), whose sum is σ = 5782832. Its totient is φ = 2580660.

The previous prime is 3871039. The next prime is 3871073. The reversal of 3871071 is 1701783.

It is not a de Polignac number, because 3871071 - 2⁵ = 3871039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3871073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 23815 + ... + 23976.

Almost surely, 2^3871071 is an apocalyptic number.

3871071 is a deficient number, since it is larger than the sum of its proper divisors (1911761).

3871071 is an equidigital number, since it uses as much as digits as its factorization.

3871071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47803 (or 47794 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 3871071 is about 1967.5037484081. The cubic root of 3871071 is about 157.0159287123.

It can be divided in two parts, 38710 and 71, that added together give a triangular number (38781 = T₂₇₈).

The spelling of 3871071 in words is "three million, eight hundred seventy-one thousand, seventy-one".