12131252 has 12 divisors (see below), whose sum is σ = 24262560. Its totient is φ = 5199096.

The previous prime is 12131219. The next prime is 12131257. The reversal of 12131252 is 25213121.

It is a happy number.

12131252 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12131252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216602 + ... + 216657.

It is an arithmetic number, because the mean of its divisors is an integer number (2021880).

Almost surely, 2^12131252 is an apocalyptic number.

It is an amenable number.

12131252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12131252 is a wasteful number, since it uses less digits than its factorization.

12131252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433270 (or 433268 counting only the distinct ones).

The product of its digits is 120, while the sum is 17.

The square root of 12131252 is about 3482.9946884829. The cubic root of 12131252 is about 229.7745238324.

Adding to 12131252 its reverse (25213121), we get a palindrome (37344373).

The spelling of 12131252 in words is "twelve million, one hundred thirty-one thousand, two hundred fifty-two".