131000517 has 16 divisors (see below), whose sum is σ = 194466880. Its totient is φ = 87157296.

The previous prime is 131000509. The next prime is 131000531. The reversal of 131000517 is 715000131.

It is a happy number.

It is not a de Polignac number, because 131000517 - 2³ = 131000509 is a prime.

It is a super-2 number, since 2×131000517² = 34322270908534578, which contains 22 as substring.

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 131000517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9483 + ... + 18759.

It is an arithmetic number, because the mean of its divisors is an integer number (12154180).

Almost surely, 2^131000517 is an apocalyptic number.

It is an amenable number.

131000517 is a deficient number, since it is larger than the sum of its proper divisors (63466363).

131000517 is an equidigital number, since it uses as much as digits as its factorization.

131000517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9809 (or 9803 counting only the distinct ones).

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

The square root of 131000517 is about 11445.5457274872. The cubic root of 131000517 is about 507.8759759333.

Adding to 131000517 its reverse (715000131), we get a palindrome (846000648).

The spelling of 131000517 in words is "one hundred thirty-one million, five hundred seventeen", and thus it is an aban number.