131235241 has 2 divisors, whose sum is σ = 131235242. Its totient is φ = 131235240.

The previous prime is 131235229. The next prime is 131235271. The reversal of 131235241 is 142532131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108243216 + 22992025 = 10404^2 + 4795^2 .

It is a cyclic number.

It is not a de Polignac number, because 131235241 - 2²⁵ = 97680809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131235271) 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 as a sum of consecutive naturals, namely, 65617620 + 65617621.

It is an arithmetic number, because the mean of its divisors is an integer number (65617621).

Almost surely, 2^131235241 is an apocalyptic number.

It is an amenable number.

131235241 is a deficient number, since it is larger than the sum of its proper divisors (1).

131235241 is an equidigital number, since it uses as much as digits as its factorization.

131235241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 131235241 is about 11455.7950837120. The cubic root of 131235241 is about 508.1791288123.

Adding to 131235241 its reverse (142532131), we get a palindrome (273767372).

The spelling of 131235241 in words is "one hundred thirty-one million, two hundred thirty-five thousand, two hundred forty-one".