131517 has 8 divisors (see below), whose sum is σ = 194880. Its totient is φ = 87660.

The previous prime is 131507. The next prime is 131519. The reversal of 131517 is 715131.

It is a happy number.

It is not a de Polignac number, because 131517 - 2⁴ = 131501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131517.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 131517.

It is not an unprimeable number, because it can be changed into a prime (131519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2409 + ... + 2462.

It is an arithmetic number, because the mean of its divisors is an integer number (24360).

2¹³¹⁵¹⁷ is an apocalyptic number.

It is an amenable number.

131517 is a deficient number, since it is larger than the sum of its proper divisors (63363).

131517 is an equidigital number, since it uses as much as digits as its factorization.

131517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4880 (or 4874 counting only the distinct ones).

The product of its digits is 105, while the sum is 18.

The square root of 131517 is about 362.6527264478. The cubic root of 131517 is about 50.8542551760.

Adding to 131517 its reverse (715131), we get a palindrome (846648).

The spelling of 131517 in words is "one hundred thirty-one thousand, five hundred seventeen".