131224252 has 12 divisors (see below), whose sum is σ = 229723200. Its totient is φ = 65589056.

The previous prime is 131224243. The next prime is 131224277. The reversal of 131224252 is 252422131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17124 + ... + 23572.

It is an arithmetic number, because the mean of its divisors is an integer number (19143600).

Almost surely, 2^131224252 is an apocalyptic number.

It is an amenable number.

131224252 is a deficient number, since it is larger than the sum of its proper divisors (98498948).

131224252 is a wasteful number, since it uses less digits than its factorization.

131224252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11540 (or 11538 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 131224252 is about 11455.3154474244. The cubic root of 131224252 is about 508.1649442679.

Adding to 131224252 its reverse (252422131), we get a palindrome (383646383).

The spelling of 131224252 in words is "one hundred thirty-one million, two hundred twenty-four thousand, two hundred fifty-two".