131421252355434 has 32 divisors (see below), whose sum is σ = 292231717367040. Its totient is φ = 43779410631936.

The previous prime is 131421252355397. The next prime is 131421252355441. The reversal of 131421252355434 is 434553252124131.

131421252355434 is a `hidden beast` number, since 1 + 3 + 1 + 4 + 2 + 1 + 252 + 355 + 43 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 131421252355434.

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, 768621687 + ... + 768792650.

It is an arithmetic number, because the mean of its divisors is an integer number (9132241167720).

Almost surely, 2^{131421252355434} is an apocalyptic number.

131421252355434 is an abundant number, since it is smaller than the sum of its proper divisors (160810465011606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131421252355434 is a wasteful number, since it uses less digits than its factorization.

131421252355434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537415931 (or 1537415925 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 45.

The spelling of 131421252355434 in words is "one hundred thirty-one trillion, four hundred twenty-one billion, two hundred fifty-two million, three hundred fifty-five thousand, four hundred thirty-four".