131231241 has 12 divisors (see below), whose sum is σ = 189691632. Its totient is φ = 87425016.

The previous prime is 131231237. The next prime is 131231257. The reversal of 131231241 is 142132131.

131231241 is a `hidden beast` number, since 1 + 312 + 312 + 41 = 666.

It is not a de Polignac number, because 131231241 - 2² = 131231237 is a prime.

It is a super-2 number, since 2×131231241² = 34443277228800162, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131231291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10630 + ... + 19376.

It is an arithmetic number, because the mean of its divisors is an integer number (15807636).

Almost surely, 2^131231241 is an apocalyptic number.

It is an amenable number.

131231241 is a deficient number, since it is larger than the sum of its proper divisors (58460391).

131231241 is a wasteful number, since it uses less digits than its factorization.

131231241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10420 (or 10417 counting only the distinct ones).

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

The square root of 131231241 is about 11455.6204982532. The cubic root of 131231241 is about 508.1739657246.

Adding to 131231241 its reverse (142132131), we get a palindrome (273363372).

The spelling of 131231241 in words is "one hundred thirty-one million, two hundred thirty-one thousand, two hundred forty-one".