3871013 has 2 divisors, whose sum is σ = 3871014. Its totient is φ = 3871012.

The previous prime is 3871009. The next prime is 3871039. The reversal of 3871013 is 3101783.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3833764 + 37249 = 1958^2 + 193^2 .

It is a cyclic number.

It is not a de Polignac number, because 3871013 - 2² = 3871009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3871013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3871073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935506 + 1935507.

It is an arithmetic number, because the mean of its divisors is an integer number (1935507).

Almost surely, 2^3871013 is an apocalyptic number.

It is an amenable number.

3871013 is a deficient number, since it is larger than the sum of its proper divisors (1).

3871013 is an equidigital number, since it uses as much as digits as its factorization.

3871013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 3871013 is about 1967.4890088638. The cubic root of 3871013 is about 157.0151445220.

Adding to 3871013 its reverse (3101783), we get a palindrome (6972796).

The spelling of 3871013 in words is "three million, eight hundred seventy-one thousand, thirteen".