131516017 has 4 divisors (see below), whose sum is σ = 132387136. Its totient is φ = 130644900.

The previous prime is 131515963. The next prime is 131516023. The reversal of 131516017 is 710615131.

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.

It is a cyclic number.

It is not a de Polignac number, because 131516017 - 2¹¹ = 131513969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131515982 and 131516000.

It is not an unprimeable number, because it can be changed into a prime (131516117) 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, 435333 + ... + 435634.

It is an arithmetic number, because the mean of its divisors is an integer number (33096784).

Almost surely, 2^131516017 is an apocalyptic number.

It is an amenable number.

131516017 is a deficient number, since it is larger than the sum of its proper divisors (871119).

131516017 is an equidigital number, since it uses as much as digits as its factorization.

131516017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871118.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 131516017 is about 11468.0432943027. The cubic root of 131516017 is about 508.5412847535.

The spelling of 131516017 in words is "one hundred thirty-one million, five hundred sixteen thousand, seventeen".