Yes, there is!

All of the common operators are actually simple functions in the Kernel namespace, and can be called like a normal function by prefixing them with their namespace:

3 |> Kernel.+(2).

If you want to use the pipe with arythmetic operators you can do this for example 1 |> Kernel.>(2).

EDIT: sorry for the duplicate answer, @Qqwy must be faster at typing than me!

Besides of the ways that were already shown to you, you can always write another function or use an anonymous one, even the anonymous syntax is a biz counterintuitive in pipes:

iex(1)> defmodule F, do: def greater(a, b), [do: a > b]
{:module, F,
 <<70, 79, 82, 49, 0, 0, 4, 216, 66, 69, 65, 77, 69, 120, 68, 99, 0, 0, 0, 161,
   131, 104, 2, 100, 0, 14, 101, 108, 105, 120, 105, 114, 95, 100, 111, 99, 115,
   95, 118, 49, 108, 0, 0, 0, 4, 104, 2, ...>>, {:greater, 2}}
iex(2)> import F
F
iex(3)> 1 |> greater(2)
false
iex(4)> 1 |> (fn (a, b) -> a > b end).(2)
false
iex(5)> 1 |> (&(&1 > &2)).(2)
false

Using single arity anonymous functions is possible as well:

iex(6)> 1 |> (&(&1 > 0)).() # these pair of parens is important!
true

Oh, just worked fine, thank you guys for the quick replies. =)