3138311 has 4 divisors (see below), whose sum is σ = 3423624. Its totient is φ = 2853000.

The previous prime is 3138299. The next prime is 3138329. The reversal of 3138311 is 1138313.

Added to its reverse (1138313) it gives a square (4276624 = 2068²).

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1138313 = 11 ⋅103483.

It is a cyclic number.

It is not a de Polignac number, because 3138311 - 2¹⁴ = 3121927 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 (3138361) 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 3 ways as a sum of consecutive naturals, for example, 142640 + ... + 142661.

It is an arithmetic number, because the mean of its divisors is an integer number (855906).

Almost surely, 2^3138311 is an apocalyptic number.

3138311 is a deficient number, since it is larger than the sum of its proper divisors (285313).

3138311 is a wasteful number, since it uses less digits than its factorization.

3138311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285312.

The product of its digits is 216, while the sum is 20.

The square root of 3138311 is about 1771.5278716407. The cubic root of 3138311 is about 146.4081747404.

Adding to 3138311 its reverse (1138313), we get a square (4276624 = 2068²).

The spelling of 3138311 in words is "three million, one hundred thirty-eight thousand, three hundred eleven".