131145252 has 48 divisors (see below), whose sum is σ = 361009152. Its totient is φ = 36260640.

The previous prime is 131145251. The next prime is 131145257. The reversal of 131145252 is 252541131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131145251) 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 15 ways as a sum of consecutive naturals, for example, 22578 + ... + 27785.

It is an arithmetic number, because the mean of its divisors is an integer number (7521024).

Almost surely, 2^131145252 is an apocalyptic number.

131145252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131145252 is an abundant number, since it is smaller than the sum of its proper divisors (229863900).

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

131145252 is a wasteful number, since it uses less digits than its factorization.

131145252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50408 (or 50406 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 131145252 is about 11451.8667473910. The cubic root of 131145252 is about 508.0629481588.

Adding to 131145252 its reverse (252541131), we get a palindrome (383686383).

The spelling of 131145252 in words is "one hundred thirty-one million, one hundred forty-five thousand, two hundred fifty-two".