31425

31425 is a number that appears in various contexts, often due to its mathematical significance. It is the sum of the first 10 prime numbers: 2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 = 31425. This property makes it notable in number theory and prime number research. Additionally, 31425 is a palindromic number in some bases, such as base 100, where it is written as 31425_100 = 31425. In recreational mathematics, 31425 is sometimes used as an approximation for pi (π) in calculations where precision is not critical. It is also a Harshad number, meaning it is divisible by the sum of its digits (3 + 1 + 4 + 2 + 5 = 15). Despite its mathematical interest, 31425 does not have any specific cultural or historical significance.