131342125 has 8 divisors (see below), whose sum is σ = 163915128. Its totient is φ = 105073600.

The previous prime is 131342087. The next prime is 131342129. The reversal of 131342125 is 521243131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16016004 + 115326121 = 4002^2 + 10739^2 .

It is a de Polignac number, because none of the positive numbers 2^k-131342125 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131342096 and 131342105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131342129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525244 + ... + 525493.

It is an arithmetic number, because the mean of its divisors is an integer number (20489391).

Almost surely, 2^131342125 is an apocalyptic number.

It is an amenable number.

131342125 is a deficient number, since it is larger than the sum of its proper divisors (32573003).

131342125 is an equidigital number, since it uses as much as digits as its factorization.

131342125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050752 (or 1050742 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 131342125 is about 11460.4591967338. The cubic root of 131342125 is about 508.3170528394.

Adding to 131342125 its reverse (521243131), we get a palindrome (652585256).

The spelling of 131342125 in words is "one hundred thirty-one million, three hundred forty-two thousand, one hundred twenty-five".