134881181 has 4 divisors (see below), whose sum is σ = 134910492. Its totient is φ = 134851872.

The previous prime is 134881163. The next prime is 134881183. The reversal of 134881181 is 181188431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40208281 + 94672900 = 6341^2 + 9730^2 .

It is a cyclic number.

It is not a de Polignac number, because 134881181 - 2²⁶ = 67772317 is a prime.

It is a super-2 number, since 2×134881181² = 36385865975909522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134881183) 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 3 ways as a sum of consecutive naturals, for example, 6080 + ... + 17513.

It is an arithmetic number, because the mean of its divisors is an integer number (33727623).

Almost surely, 2^134881181 is an apocalyptic number.

It is an amenable number.

134881181 is a deficient number, since it is larger than the sum of its proper divisors (29311).

134881181 is an equidigital number, since it uses as much as digits as its factorization.

134881181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29310.

The product of its digits is 6144, while the sum is 35.

The square root of 134881181 is about 11613.8357574059. The cubic root of 134881181 is about 512.8422378775.

The spelling of 134881181 in words is "one hundred thirty-four million, eight hundred eighty-one thousand, one hundred eighty-one".