There is a three-digit number. The number in the tens place is 1 greater than the number in the ones place and 3 greater than the number in the hundreds place. The number in the hundreds place is half of 10. What is the number?
有一个三位数，十位上的数比个位上的数大1，比百位上的数大3，百位上的数是10的一半，这个数是多少．
<result>587</result>