131596650617 has 4 divisors (see below), whose sum is σ = 131639927796. Its totient is φ = 131553373440.

The previous prime is 131596650611. The next prime is 131596650623. The reversal of 131596650617 is 716056695131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 716056695131 = 21817 ⋅32821043.

It is an interprime number because it is at equal distance from previous prime (131596650611) and next prime (131596650623).

It can be written as a sum of positive squares in 2 ways, for example, as 122945604496 + 8651046121 = 350636^2 + 93011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131596650617 is a prime.

It is a super-2 number, since 2×131596650617² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131596650611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21634028 + ... + 21640109.

It is an arithmetic number, because the mean of its divisors is an integer number (32909981949).

Almost surely, 2^131596650617 is an apocalyptic number.

It is an amenable number.

131596650617 is a deficient number, since it is larger than the sum of its proper divisors (43277179).

131596650617 is an equidigital number, since it uses as much as digits as its factorization.

131596650617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43277178.

The product of its (nonzero) digits is 1020600, while the sum is 50.

The spelling of 131596650617 in words is "one hundred thirty-one billion, five hundred ninety-six million, six hundred fifty thousand, six hundred seventeen".