131125443 has 16 divisors (see below), whose sum is σ = 186700800. Its totient is φ = 81678240.

The previous prime is 131125439. The next prime is 131125453. The reversal of 131125443 is 344521131.

It is a happy number.

It is not a de Polignac number, because 131125443 - 2² = 131125439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131125433) 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 15 ways as a sum of consecutive naturals, for example, 21613 + ... + 27006.

It is an arithmetic number, because the mean of its divisors is an integer number (11668800).

Almost surely, 2^131125443 is an apocalyptic number.

131125443 is a deficient number, since it is larger than the sum of its proper divisors (55575357).

131125443 is a wasteful number, since it uses less digits than its factorization.

131125443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48682.

The product of its digits is 1440, while the sum is 24.

The square root of 131125443 is about 11451.0018339008. The cubic root of 131125443 is about 508.0373665345.

Adding to 131125443 its reverse (344521131), we get a palindrome (475646574).

The spelling of 131125443 in words is "one hundred thirty-one million, one hundred twenty-five thousand, four hundred forty-three".