131043342420405 has 12 divisors (see below), whose sum is σ = 227141793528780. Its totient is φ = 69889782624192.

The previous prime is 131043342420391. The next prime is 131043342420427. The reversal of 131043342420405 is 504024243340131.

131043342420405 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 4 + 3 + 3 + 4 + 242 + 0 + 405 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 98216939918916 + 32826402501489 = 9910446^2 + 5729433^2 .

It is not a de Polignac number, because 131043342420405 - 2⁹ = 131043342419893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131043342420405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1456037137960 + ... + 1456037138049.

It is an arithmetic number, because the mean of its divisors is an integer number (18928482794065).

Almost surely, 2^{131043342420405} is an apocalyptic number.

131043342420405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131043342420405 is a deficient number, since it is larger than the sum of its proper divisors (96098451108375).

131043342420405 is a wasteful number, since it uses less digits than its factorization.

131043342420405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2912074276020 (or 2912074276017 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 131043342420405 its reverse (504024243340131), we get a palindrome (635067585760536).

The spelling of 131043342420405 in words is "one hundred thirty-one trillion, forty-three billion, three hundred forty-two million, four hundred twenty thousand, four hundred five".