134871309 has 12 divisors (see below), whose sum is σ = 195904800. Its totient is φ = 89410824.

The previous prime is 134871301. The next prime is 134871311. The reversal of 134871309 is 903178431.

It is a happy number.

134871309 is a `hidden beast` number, since 1 + 348 + 7 + 1 + 309 = 666.

It is not a de Polignac number, because 134871309 - 2³ = 134871301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134871301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40249 + ... + 43470.

It is an arithmetic number, because the mean of its divisors is an integer number (16325400).

Almost surely, 2^134871309 is an apocalyptic number.

It is an amenable number.

134871309 is a deficient number, since it is larger than the sum of its proper divisors (61033491).

134871309 is a wasteful number, since it uses less digits than its factorization.

134871309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83904 (or 83901 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 134871309 is about 11613.4107393134. The cubic root of 134871309 is about 512.8297258723.

The spelling of 134871309 in words is "one hundred thirty-four million, eight hundred seventy-one thousand, three hundred nine".