131125523 has 4 divisors (see below), whose sum is σ = 131883648. Its totient is φ = 130367400.

The previous prime is 131125487. The next prime is 131125529. The reversal of 131125523 is 325521131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131125523 - 2⁶ = 131125459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131125529) 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 3 ways as a sum of consecutive naturals, for example, 378803 + ... + 379148.

It is an arithmetic number, because the mean of its divisors is an integer number (32970912).

Almost surely, 2^131125523 is an apocalyptic number.

131125523 is a deficient number, since it is larger than the sum of its proper divisors (758125).

131125523 is an equidigital number, since it uses as much as digits as its factorization.

131125523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758124.

The product of its digits is 900, while the sum is 23.

The square root of 131125523 is about 11451.0053270444. The cubic root of 131125523 is about 508.0374698528.

Adding to 131125523 its reverse (325521131), we get a palindrome (456646654).

The spelling of 131125523 in words is "one hundred thirty-one million, one hundred twenty-five thousand, five hundred twenty-three".