11531241 has 20 divisors (see below), whose sum is σ = 17823300. Its totient is φ = 7420896.

The previous prime is 11531239. The next prime is 11531249. The reversal of 11531241 is 14213511.

It can be written as a sum of positive squares in 2 ways, for example, as 9585216 + 1946025 = 3096^2 + 1395^2 .

It is not a de Polignac number, because 11531241 - 2¹ = 11531239 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11531249) 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 19 ways as a sum of consecutive naturals, for example, 106 + ... + 4803.

It is an arithmetic number, because the mean of its divisors is an integer number (891165).

Almost surely, 2^11531241 is an apocalyptic number.

It is an amenable number.

11531241 is a deficient number, since it is larger than the sum of its proper divisors (6292059).

11531241 is an equidigital number, since it uses as much as digits as its factorization.

11531241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4950 (or 4941 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 11531241 is about 3395.7681016230. The cubic root of 11531241 is about 225.9220826759.

Adding to 11531241 its reverse (14213511), we get a palindrome (25744752).

The spelling of 11531241 in words is "eleven million, five hundred thirty-one thousand, two hundred forty-one".