3109109 has 4 divisors (see below), whose sum is σ = 3160140. Its totient is φ = 3058080.

The previous prime is 3109091. The next prime is 3109111. The reversal of 3109109 is 9019013.

3109109 = T₁₆₂ + T₁₆₃ + ... + T₂₈₃.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9019013 = 23 ⋅392131.

It can be written as a sum of positive squares in 2 ways, for example, as 253009 + 2856100 = 503^2 + 1690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3109109 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 (3109159) 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, 25424 + ... + 25545.

It is an arithmetic number, because the mean of its divisors is an integer number (790035).

Almost surely, 2^3109109 is an apocalyptic number.

It is an amenable number.

3109109 is a deficient number, since it is larger than the sum of its proper divisors (51031).

3109109 is an equidigital number, since it uses as much as digits as its factorization.

3109109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51030.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 3109109 is about 1763.2665708848. The cubic root of 3109109 is about 145.9526493099.

The spelling of 3109109 in words is "three million, one hundred nine thousand, one hundred nine".