3105139 has 4 divisors (see below), whose sum is σ = 3109680. Its totient is φ = 3100600.

The previous prime is 3105131. The next prime is 3105143. The reversal of 3105139 is 9315013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9315013 = 1051 ⋅8863.

It is a cyclic number.

It is not a de Polignac number, because 3105139 - 2³ = 3105131 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 (3105131) 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, 1012 + ... + 2689.

It is an arithmetic number, because the mean of its divisors is an integer number (777420).

Almost surely, 2^3105139 is an apocalyptic number.

3105139 is a deficient number, since it is larger than the sum of its proper divisors (4541).

3105139 is an equidigital number, since it uses as much as digits as its factorization.

3105139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 3105139 is about 1762.1404597818. The cubic root of 3105139 is about 145.8905008705.

The spelling of 3105139 in words is "three million, one hundred five thousand, one hundred thirty-nine".