131251441 has 4 divisors (see below), whose sum is σ = 138972132. Its totient is φ = 123530752.

The previous prime is 131251433. The next prime is 131251453. The reversal of 131251441 is 144152131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40449600 + 90801841 = 6360^2 + 9529^2 .

It is a cyclic number.

It is not a de Polignac number, because 131251441 - 2³ = 131251433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131251481) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3860320 + ... + 3860353.

It is an arithmetic number, because the mean of its divisors is an integer number (34743033).

Almost surely, 2^131251441 is an apocalyptic number.

It is an amenable number.

131251441 is a deficient number, since it is larger than the sum of its proper divisors (7720691).

131251441 is an equidigital number, since it uses as much as digits as its factorization.

131251441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7720690.

The product of its digits is 480, while the sum is 22.

The square root of 131251441 is about 11456.5021276129. The cubic root of 131251441 is about 508.2000382446.

The spelling of 131251441 in words is "one hundred thirty-one million, two hundred fifty-one thousand, four hundred forty-one".