131312241 has 6 divisors (see below), whose sum is σ = 189673250. Its totient is φ = 87541488.

The previous prime is 131312227. The next prime is 131312243. The reversal of 131312241 is 142213131.

It can be written as a sum of positive squares in only one way, i.e., 120560400 + 10751841 = 10980^2 + 3279^2 .

It is not a de Polignac number, because 131312241 - 2⁶ = 131312177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131312243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7295116 + ... + 7295133.

Almost surely, 2^131312241 is an apocalyptic number.

It is an amenable number.

131312241 is a deficient number, since it is larger than the sum of its proper divisors (58361009).

131312241 is a wasteful number, since it uses less digits than its factorization.

131312241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14590255 (or 14590252 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 131312241 is about 11459.1553353639. The cubic root of 131312241 is about 508.2784978085.

Adding to 131312241 its reverse (142213131), we get a palindrome (273525372).

The spelling of 131312241 in words is "one hundred thirty-one million, three hundred twelve thousand, two hundred forty-one".