131917 has 8 divisors (see below), whose sum is σ = 142560. Its totient is φ = 121680.

The previous prime is 131909. The next prime is 131927. The reversal of 131917 is 719131.

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 131917 - 2³ = 131909 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131927) 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, 942 + ... + 1072.

It is an arithmetic number, because the mean of its divisors is an integer number (17820).

2¹³¹⁹¹⁷ is an apocalyptic number.

It is an amenable number.

131917 is a deficient number, since it is larger than the sum of its proper divisors (10643).

131917 is a wasteful number, since it uses less digits than its factorization.

131917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203.

The product of its digits is 189, while the sum is 22.

The square root of 131917 is about 363.2037995396. The cubic root of 131917 is about 50.9057595803.

The spelling of 131917 in words is "one hundred thirty-one thousand, nine hundred seventeen".