131521252 has 12 divisors (see below), whose sum is σ = 233404416. Its totient is φ = 64834280.

The previous prime is 131521237. The next prime is 131521259. The reversal of 131521252 is 252125131.

It is not an unprimeable number, because it can be changed into a prime (131521259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231268 + ... + 231835.

It is an arithmetic number, because the mean of its divisors is an integer number (19450368).

Almost surely, 2^131521252 is an apocalyptic number.

It is an amenable number.

131521252 is a deficient number, since it is larger than the sum of its proper divisors (101883164).

131521252 is a wasteful number, since it uses less digits than its factorization.

131521252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463178 (or 463176 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 131521252 is about 11468.2715349786. The cubic root of 131521252 is about 508.5480321656.

Adding to 131521252 its reverse (252125131), we get a palindrome (383646383).

The spelling of 131521252 in words is "one hundred thirty-one million, five hundred twenty-one thousand, two hundred fifty-two".