131320347005 has 4 divisors (see below), whose sum is σ = 157584416412. Its totient is φ = 105056277600.

The previous prime is 131320347001. The next prime is 131320347019. The reversal of 131320347005 is 500743023131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71578721764 + 59741625241 = 267542^2 + 244421^2 .

It is not a de Polignac number, because 131320347005 - 2² = 131320347001 is a prime.

It is a super-2 number, since 2×131320347005² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131320347001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13132034696 + ... + 13132034705.

It is an arithmetic number, because the mean of its divisors is an integer number (39396104103).

Almost surely, 2^131320347005 is an apocalyptic number.

It is an amenable number.

131320347005 is a deficient number, since it is larger than the sum of its proper divisors (26264069407).

131320347005 is an equidigital number, since it uses as much as digits as its factorization.

131320347005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26264069406.

The product of its (nonzero) digits is 7560, while the sum is 29.

The spelling of 131320347005 in words is "one hundred thirty-one billion, three hundred twenty million, three hundred forty-seven thousand, five".