131135345117 has 6 divisors (see below), whose sum is σ = 152545197438. Its totient is φ = 112401724344.

The previous prime is 131135345039. The next prime is 131135345153. The reversal of 131135345117 is 711543531131.

It can be written as a sum of positive squares in only one way, i.e., 73413360601 + 57721984516 = 270949^2 + 240254^2 .

It is not a de Polignac number, because 131135345117 - 2⁸ = 131135344861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131135345317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1338115718 + ... + 1338115815.

It is an arithmetic number, because the mean of its divisors is an integer number (25424199573).

Almost surely, 2^131135345117 is an apocalyptic number.

It is an amenable number.

131135345117 is a deficient number, since it is larger than the sum of its proper divisors (21409852321).

131135345117 is an equidigital number, since it uses as much as digits as its factorization.

131135345117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676231547 (or 2676231540 counting only the distinct ones).

The product of its digits is 18900, while the sum is 35.

Adding to 131135345117 its reverse (711543531131), we get a palindrome (842678876248).

The spelling of 131135345117 in words is "one hundred thirty-one billion, one hundred thirty-five million, three hundred forty-five thousand, one hundred seventeen".