131331241 has 8 divisors (see below), whose sum is σ = 138172104. Its totient is φ = 124663680.

The previous prime is 131331229. The next prime is 131331269. The reversal of 131331241 is 142133131.

It can be written as a sum of positive squares in 4 ways, for example, as 1371241 + 129960000 = 1171^2 + 11400^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131331241 - 2¹¹ = 131329193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131334241) 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 7 ways as a sum of consecutive naturals, for example, 41770 + ... + 44803.

It is an arithmetic number, because the mean of its divisors is an integer number (17271513).

Almost surely, 2^131331241 is an apocalyptic number.

It is an amenable number.

131331241 is a deficient number, since it is larger than the sum of its proper divisors (6840863).

131331241 is an equidigital number, since it uses as much as digits as its factorization.

131331241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86651.

The product of its digits is 216, while the sum is 19.

The square root of 131331241 is about 11459.9843368130. The cubic root of 131331241 is about 508.3030114554.

Adding to 131331241 its reverse (142133131), we get a palindrome (273464372).

The spelling of 131331241 in words is "one hundred thirty-one million, three hundred thirty-one thousand, two hundred forty-one".