135508923 has 32 divisors (see below), whose sum is σ = 219697920. Its totient is φ = 81866880.

The previous prime is 135508913. The next prime is 135508949. The reversal of 135508923 is 329805531.

135508923 is a `hidden beast` number, since 1 + 3 + 550 + 89 + 23 = 666.

It is not a de Polignac number, because 135508923 - 2⁶ = 135508859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135508913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138211 + ... + 139187.

It is an arithmetic number, because the mean of its divisors is an integer number (6865560).

Almost surely, 2^135508923 is an apocalyptic number.

135508923 is a deficient number, since it is larger than the sum of its proper divisors (84188997).

135508923 is a wasteful number, since it uses less digits than its factorization.

135508923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464 (or 1458 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 135508923 is about 11640.8299961815. The cubic root of 135508923 is about 513.6366023897.

The spelling of 135508923 in words is "one hundred thirty-five million, five hundred eight thousand, nine hundred twenty-three".