131244241 has 4 divisors (see below), whose sum is σ = 131549184. Its totient is φ = 130939300.

The previous prime is 131244209. The next prime is 131244247. The reversal of 131244241 is 142442131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142442131 = 13 ⋅10957087.

It is a cyclic number.

It is not a de Polignac number, because 131244241 - 2⁵ = 131244209 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131244247) 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 3 ways as a sum of consecutive naturals, for example, 151825 + ... + 152686.

It is an arithmetic number, because the mean of its divisors is an integer number (32887296).

Almost surely, 2^131244241 is an apocalyptic number.

It is an amenable number.

131244241 is a deficient number, since it is larger than the sum of its proper divisors (304943).

131244241 is an equidigital number, since it uses as much as digits as its factorization.

131244241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304942.

The product of its digits is 768, while the sum is 22.

The square root of 131244241 is about 11456.1878912664. The cubic root of 131244241 is about 508.1907453760.

Adding to 131244241 its reverse (142442131), we get a palindrome (273686372).

The spelling of 131244241 in words is "one hundred thirty-one million, two hundred forty-four thousand, two hundred forty-one".