131311241 has 2 divisors, whose sum is σ = 131311242. Its totient is φ = 131311240.

The previous prime is 131311199. The next prime is 131311249. The reversal of 131311241 is 142113131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74459641 + 56851600 = 8629^2 + 7540^2 .

It is a cyclic number.

It is not a de Polignac number, because 131311241 - 2⁶ = 131311177 is a prime.

It is not a weakly prime, because it can be changed into another prime (131311249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65655620 + 65655621.

It is an arithmetic number, because the mean of its divisors is an integer number (65655621).

Almost surely, 2^131311241 is an apocalyptic number.

It is an amenable number.

131311241 is a deficient number, since it is larger than the sum of its proper divisors (1).

131311241 is an equidigital number, since it uses as much as digits as its factorization.

131311241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 17.

The square root of 131311241 is about 11459.1117020474. Note that the first 3 decimals coincide. The cubic root of 131311241 is about 508.2772075511.

Adding to 131311241 its reverse (142113131), we get a palindrome (273424372).

The spelling of 131311241 in words is "one hundred thirty-one million, three hundred eleven thousand, two hundred forty-one".