Like I just said, it's 230 seconds. That's 1073741824 seconds. The "gibi-" prefix was made up by nerds to talk about big numbers as powers of 2 rather than powers of 10, for stuff like data that works in binary. A "mebibyte" is 220 bytes, "gibibyte" is 230 bytes, and so on. Mostly people think this sounds stupid so they carry on using "megabyte" and "gigabyte" for these numbers, but they are technically incorrect.
The mix-up between these two meanings of "megabyte" and "gigabyte" is exploited by certain capitalist ghouls to sell you less data than you're expecting. You buy a gigabyte, expecting 230 bytes, but what you really get is 109 bytes. That amounts to an error (profit) of about 7%, which increases to 9% when you get up to the tera-/tebi- level. You can see how much of a difference this makes by comparing your gigasecond birthday with your gibisecond birthday. They're about 3 years apart.