131911 has 8 divisors (see below), whose sum is σ = 145040. Its totient is φ = 119232.

The previous prime is 131909. The next prime is 131927. The reversal of 131911 is 119131.

It is a happy number.

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 131911 - 2¹ = 131909 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 (131941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 880 + ... + 1018.

It is an arithmetic number, because the mean of its divisors is an integer number (18130).

2¹³¹⁹¹¹ is an apocalyptic number.

131911 is a deficient number, since it is larger than the sum of its proper divisors (13129).

131911 is a wasteful number, since it uses less digits than its factorization.

131911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225.

The product of its digits is 27, while the sum is 16.

The square root of 131911 is about 363.1955396202. The cubic root of 131911 is about 50.9049877839.

The spelling of 131911 in words is "one hundred thirty-one thousand, nine hundred eleven".