131421405305535 has 16 divisors (see below), whose sum is σ = 210287424775680. Its totient is φ = 70087024067360.

The previous prime is 131421405305467. The next prime is 131421405305569. The reversal of 131421405305535 is 535503504124131.

It is not a de Polignac number, because 131421405305535 - 2¹⁷ = 131421405174463 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 274258611 + ... + 274737380.

It is an arithmetic number, because the mean of its divisors is an integer number (13142964048480).

Almost surely, 2^{131421405305535} is an apocalyptic number.

131421405305535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131421405305535 is a deficient number, since it is larger than the sum of its proper divisors (78866019470145).

131421405305535 is a wasteful number, since it uses less digits than its factorization.

131421405305535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549011958.

The product of its (nonzero) digits is 540000, while the sum is 42.

Adding to 131421405305535 its reverse (535503504124131), we get a palindrome (666924909429666).

The spelling of 131421405305535 in words is "one hundred thirty-one trillion, four hundred twenty-one billion, four hundred five million, three hundred five thousand, five hundred thirty-five".