131543814565369 has 4 divisors (see below), whose sum is σ = 131546383982244. Its totient is φ = 131541245148496.

The previous prime is 131543814565363. The next prime is 131543814565409. The reversal of 131543814565369 is 963565418345131.

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 74292073911225 + 57251740654144 = 8619285^2 + 7566488^2 .

It is a cyclic number.

It is not a de Polignac number, because 131543814565369 - 2⁹ = 131543814564857 is a prime.

It is a super-2 number, since 2×131543814565369² (a number of 29 digits) contains 22 as substring.

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 131543814565369.

It is not an unprimeable number, because it can be changed into a prime (131543814565363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1284631642 + ... + 1284734035.

It is an arithmetic number, because the mean of its divisors is an integer number (32886595995561).

Almost surely, 2^{131543814565369} is an apocalyptic number.

It is an amenable number.

131543814565369 is a deficient number, since it is larger than the sum of its proper divisors (2569416875).

131543814565369 is an equidigital number, since it uses as much as digits as its factorization.

131543814565369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569416874.

The product of its digits is 139968000, while the sum is 64.

The spelling of 131543814565369 in words is "one hundred thirty-one trillion, five hundred forty-three billion, eight hundred fourteen million, five hundred sixty-five thousand, three hundred sixty-nine".