131017 has 4 divisors (see below), whose sum is σ = 134596. Its totient is φ = 127440.

The previous prime is 131011. The next prime is 131023. The reversal of 131017 is 710131.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (131011) and next prime (131023).

It can be written as a sum of positive squares in 2 ways, for example, as 89401 + 41616 = 299^2 + 204^2 .

It is a cyclic number.

It is not a de Polignac number, because 131017 - 2³ = 131009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130988 and 131006.

It is not an unprimeable number, because it can be changed into a prime (131011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1734 + ... + 1807.

It is an arithmetic number, because the mean of its divisors is an integer number (33649).

2¹³¹⁰¹⁷ is an apocalyptic number.

It is an amenable number.

131017 is a deficient number, since it is larger than the sum of its proper divisors (3579).

131017 is an equidigital number, since it uses as much as digits as its factorization.

131017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3578.

The product of its (nonzero) digits is 21, while the sum is 13.

The square root of 131017 is about 361.9627052612. The cubic root of 131017 is about 50.7897276024.

Adding to 131017 its reverse (710131), we get a palindrome (841148).

The spelling of 131017 in words is "one hundred thirty-one thousand, seventeen".