3871313 has 4 divisors (see below), whose sum is σ = 3875940. Its totient is φ = 3866688.

The previous prime is 3871303. The next prime is 3871319. The reversal of 3871313 is 3131783.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3131783 = 107 ⋅29269.

It can be written as a sum of positive squares in 2 ways, for example, as 692224 + 3179089 = 832^2 + 1783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3871313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3871319) 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, 668 + ... + 2861.

It is an arithmetic number, because the mean of its divisors is an integer number (968985).

Almost surely, 2^3871313 is an apocalyptic number.

It is an amenable number.

3871313 is a deficient number, since it is larger than the sum of its proper divisors (4627).

3871313 is a wasteful number, since it uses less digits than its factorization.

3871313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4626.

The product of its digits is 1512, while the sum is 26.

The square root of 3871313 is about 1967.5652466945. The cubic root of 3871313 is about 157.0192005944.

The spelling of 3871313 in words is "three million, eight hundred seventy-one thousand, three hundred thirteen".