131365440017 has 4 divisors (see below), whose sum is σ = 150131931456. Its totient is φ = 112598948580.

The previous prime is 131365439999. The next prime is 131365440049. The reversal of 131365440017 is 710044563131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 710044563131 = 17 ⋅41767327243.

It is a cyclic number.

It is not a de Polignac number, because 131365440017 - 2¹⁰ = 131365438993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131365442017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9383245709 + ... + 9383245722.

It is an arithmetic number, because the mean of its divisors is an integer number (37532982864).

Almost surely, 2^131365440017 is an apocalyptic number.

It is an amenable number.

131365440017 is a deficient number, since it is larger than the sum of its proper divisors (18766491439).

131365440017 is an equidigital number, since it uses as much as digits as its factorization.

131365440017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18766491438.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 131365440017 in words is "one hundred thirty-one billion, three hundred sixty-five million, four hundred forty thousand, seventeen".