131232125 has 8 divisors (see below), whose sum is σ = 163777848. Its totient is φ = 104985600.

The previous prime is 131232113. The next prime is 131232133. The reversal of 131232125 is 521232131.

It can be written as a sum of positive squares in 4 ways, for example, as 25512601 + 105719524 = 5051^2 + 10282^2 .

It is not a de Polignac number, because 131232125 - 2¹² = 131228029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131232097 and 131232106.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 524804 + ... + 525053.

It is an arithmetic number, because the mean of its divisors is an integer number (20472231).

Almost surely, 2^131232125 is an apocalyptic number.

It is an amenable number.

131232125 is a deficient number, since it is larger than the sum of its proper divisors (32545723).

131232125 is an equidigital number, since it uses as much as digits as its factorization.

131232125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049872 (or 1049862 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 131232125 is about 11455.6590818687. The cubic root of 131232125 is about 508.1751067760.

Adding to 131232125 its reverse (521232131), we get a palindrome (652464256).

The spelling of 131232125 in words is "one hundred thirty-one million, two hundred thirty-two thousand, one hundred twenty-five".