131241311 has 4 divisors (see below), whose sum is σ = 133465800. Its totient is φ = 129016824.

The previous prime is 131241307. The next prime is 131241323. The reversal of 131241311 is 113142131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113142131 = 19 ⋅5954849.

It is a cyclic number.

It is not a de Polignac number, because 131241311 - 2² = 131241307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131241311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131241361) 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 3 ways as a sum of consecutive naturals, for example, 1112156 + ... + 1112273.

It is an arithmetic number, because the mean of its divisors is an integer number (33366450).

Almost surely, 2^131241311 is an apocalyptic number.

131241311 is a deficient number, since it is larger than the sum of its proper divisors (2224489).

131241311 is an equidigital number, since it uses as much as digits as its factorization.

131241311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224488.

The product of its digits is 72, while the sum is 17.

The square root of 131241311 is about 11456.0600120635. The cubic root of 131241311 is about 508.1869635975.

Adding to 131241311 its reverse (113142131), we get a palindrome (244383442).

The spelling of 131241311 in words is "one hundred thirty-one million, two hundred forty-one thousand, three hundred eleven".