3138771 has 4 divisors (see below), whose sum is σ = 4185032. Its totient is φ = 2092512.

The previous prime is 3138769. The next prime is 3138791. The reversal of 3138771 is 1778313.

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

It is not a de Polignac number, because 3138771 - 2¹ = 3138769 is a prime.

It is a D-number.

It is a Duffinian number.

3138771 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3138791) 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, 523126 + ... + 523131.

It is an arithmetic number, because the mean of its divisors is an integer number (1046258).

Almost surely, 2^3138771 is an apocalyptic number.

3138771 is a deficient number, since it is larger than the sum of its proper divisors (1046261).

3138771 is a wasteful number, since it uses less digits than its factorization.

3138771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046260.

The product of its digits is 3528, while the sum is 30.

The square root of 3138771 is about 1771.6576983153. The cubic root of 3138771 is about 146.4153276824.

The spelling of 3138771 in words is "three million, one hundred thirty-eight thousand, seven hundred seventy-one".