134831809 has 8 divisors (see below), whose sum is σ = 162203840. Its totient is φ = 109487376.

The previous prime is 134831797. The next prime is 134831813. The reversal of 134831809 is 908138431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134831809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134831849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506754 + ... + 507019.

It is an arithmetic number, because the mean of its divisors is an integer number (20275480).

Almost surely, 2^134831809 is an apocalyptic number.

134831809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

134831809 is a deficient number, since it is larger than the sum of its proper divisors (27372031).

134831809 is a wasteful number, since it uses less digits than its factorization.

134831809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013799.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 134831809 is about 11611.7099946563. The cubic root of 134831809 is about 512.7796565329.

The spelling of 134831809 in words is "one hundred thirty-four million, eight hundred thirty-one thousand, eight hundred nine".