131243311 has 8 divisors (see below), whose sum is σ = 133363584. Its totient is φ = 129139800.

The previous prime is 131243297. The next prime is 131243347. The reversal of 131243311 is 113342131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131243311 - 2⁹ = 131242799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131243011) 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 7 ways as a sum of consecutive naturals, for example, 12096 + ... + 20218.

It is an arithmetic number, because the mean of its divisors is an integer number (16670448).

Almost surely, 2^131243311 is an apocalyptic number.

131243311 is a deficient number, since it is larger than the sum of its proper divisors (2120273).

131243311 is a wasteful number, since it uses less digits than its factorization.

131243311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8381.

The product of its digits is 216, while the sum is 19.

The square root of 131243311 is about 11456.1473017765. The cubic root of 131243311 is about 508.1895450224.

Adding to 131243311 its reverse (113342131), we get a palindrome (244585442).

The spelling of 131243311 in words is "one hundred thirty-one million, two hundred forty-three thousand, three hundred eleven".