131405345135535 has 16 divisors (see below), whose sum is σ = 211507525587456. Its totient is φ = 69663192948768.

The previous prime is 131405345135513. The next prime is 131405345135587. The reversal of 131405345135535 is 535531543504131.

It is not a de Polignac number, because 131405345135535 - 2²⁰ = 131405344086959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26228609299 + ... + 26228614308.

It is an arithmetic number, because the mean of its divisors is an integer number (13219220349216).

Almost surely, 2^{131405345135535} is an apocalyptic number.

131405345135535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131405345135535 is a deficient number, since it is larger than the sum of its proper divisors (80102180451921).

131405345135535 is a wasteful number, since it uses less digits than its factorization.

131405345135535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52457223782.

The product of its (nonzero) digits is 4050000, while the sum is 48.

Adding to 131405345135535 its reverse (535531543504131), we get a palindrome (666936888639666).

The spelling of 131405345135535 in words is "one hundred thirty-one trillion, four hundred five billion, three hundred forty-five million, one hundred thirty-five thousand, five hundred thirty-five".