LOS ANGELES — Iron Man reigns as the standard-bearer of Hollywood superheroes with a $175.3 million domestic opening weekend for his latest sequel and an overseas haul of a half-billion dollars in less than two weeks.

According to studio estimates Sunday, “Iron Man 3” has raced to a worldwide total of $680.1 million.

That includes $175.9 million in its second weekend overseas, where the film has rung up $504.8 million so far.

No other solo superhero — not even Batman or Spider-Man — has managed this kind of business.

1. “Iron Man 3,” $175.3 million ($175.9 million international).

2. “Pain & Gain,” $7.6 million.

3. “42,” $6.2 million.

4. “Oblivion,” $5.8 million ($6.5 million international).

5. “The Croods,” $4.2 million ($17.4 million international).

6. “The Big Wedding,” $3.9 million ($2.5 million international).

7. “Mud,” $2.2 million.

8. “Oz the Great and Powerful,” $1.8 million.

9. “Scary Movie 5,” $1.4 million ($4 million international).

10. “The Place Beyond the Pines,” $1.3 million.