134135181531 has 72 divisors (see below), whose sum is σ = 213177584256. Its totient is φ = 81226229760.

The previous prime is 134135181529. The next prime is 134135181541. The reversal of 134135181531 is 135181531431.

134135181531 is a `hidden beast` number, since 1 + 3 + 41 + 3 + 5 + 1 + 81 + 531 = 666.

It is not a de Polignac number, because 134135181531 - 2¹ = 134135181529 is a prime.

It is a super-2 number, since 2×134135181531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (134135181541) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 26701686 + ... + 26706708.

Almost surely, 2^134135181531 is an apocalyptic number.

134135181531 is a deficient number, since it is larger than the sum of its proper divisors (79042402725).

134135181531 is a wasteful number, since it uses less digits than its factorization.

134135181531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333 (or 5317 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The spelling of 134135181531 in words is "one hundred thirty-four billion, one hundred thirty-five million, one hundred eighty-one thousand, five hundred thirty-one".