131404440535 has 32 divisors (see below), whose sum is σ = 165346126848. Its totient is φ = 100062082560.

The previous prime is 131404440529. The next prime is 131404440539. The reversal of 131404440535 is 535044404131.

It is a de Polignac number, because none of the positive numbers 2^k-131404440535 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131404440535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131404440539) 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 31 ways as a sum of consecutive naturals, for example, 28669854 + ... + 28674436.

It is an arithmetic number, because the mean of its divisors is an integer number (5167066464).

Almost surely, 2^131404440535 is an apocalyptic number.

131404440535 is a deficient number, since it is larger than the sum of its proper divisors (33941686313).

131404440535 is a wasteful number, since it uses less digits than its factorization.

131404440535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5775.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 131404440535 its reverse (535044404131), we get a palindrome (666448844666).

The spelling of 131404440535 in words is "one hundred thirty-one billion, four hundred four million, four hundred forty thousand, five hundred thirty-five".