131333525 has 12 divisors (see below), whose sum is σ = 163143204. Its totient is φ = 104880000.

The previous prime is 131333513. The next prime is 131333563. The reversal of 131333525 is 525333131.

It can be written as a sum of positive squares in 6 ways, for example, as 2079364 + 129254161 = 1442^2 + 11369^2 .

It is a de Polignac number, because none of the positive numbers 2^k-131333525 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131333494 and 131333503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10655 + ... + 19395.

It is an arithmetic number, because the mean of its divisors is an integer number (13595267).

Almost surely, 2^131333525 is an apocalyptic number.

It is an amenable number.

131333525 is a deficient number, since it is larger than the sum of its proper divisors (31809679).

131333525 is an equidigital number, since it uses as much as digits as its factorization.

131333525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9352 (or 9347 counting only the distinct ones).

The product of its digits is 4050, while the sum is 26.

The square root of 131333525 is about 11460.0839874758. The cubic root of 131333525 is about 508.3059580946.

Adding to 131333525 its reverse (525333131), we get a palindrome (656666656).

The spelling of 131333525 in words is "one hundred thirty-one million, three hundred thirty-three thousand, five hundred twenty-five".