134981523 has 12 divisors (see below), whose sum is σ = 195413400. Its totient is φ = 89784576.

The previous prime is 134981521. The next prime is 134981527. The reversal of 134981523 is 325189431.

134981523 is a `hidden beast` number, since 13 + 49 + 81 + 523 = 666.

It is not a de Polignac number, because 134981523 - 2¹ = 134981521 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (134981521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12661 + ... + 20742.

It is an arithmetic number, because the mean of its divisors is an integer number (16284450).

Almost surely, 2^134981523 is an apocalyptic number.

134981523 is a deficient number, since it is larger than the sum of its proper divisors (60431877).

134981523 is a wasteful number, since it uses less digits than its factorization.

134981523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33858 (or 33855 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 134981523 is about 11618.1548879329. The cubic root of 134981523 is about 512.9693790644.

The spelling of 134981523 in words is "one hundred thirty-four million, nine hundred eighty-one thousand, five hundred twenty-three".