131404322010505 has 8 divisors (see below), whose sum is σ = 157918103974152. Its totient is φ = 104968179234048.

The previous prime is 131404322010443. The next prime is 131404322010509. The reversal of 131404322010505 is 505010223404131.

It can be written as a sum of positive squares in 4 ways, for example, as 90227562394761 + 41176759615744 = 9498819^2 + 6416912^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131404322010505 - 2⁹ = 131404322009993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131404322010509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19409793072 + ... + 19409799841.

It is an arithmetic number, because the mean of its divisors is an integer number (19739762996769).

Almost surely, 2^{131404322010505} is an apocalyptic number.

It is an amenable number.

131404322010505 is a deficient number, since it is larger than the sum of its proper divisors (26513781963647).

131404322010505 is an equidigital number, since it uses as much as digits as its factorization.

131404322010505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38819593595.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 131404322010505 its reverse (505010223404131), we get a palindrome (636414545414636).

The spelling of 131404322010505 in words is "one hundred thirty-one trillion, four hundred four billion, three hundred twenty-two million, ten thousand, five hundred five".