134218281 has 8 divisors (see below), whose sum is σ = 189484704. Its totient is φ = 84215360.

The previous prime is 134218243. The next prime is 134218289. The reversal of 134218281 is 182812431.

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

It is a cyclic number.

It is not a de Polignac number, because 134218281 - 2⁷ = 134218153 is a prime.

It is a super-2 number, since 2×134218281² = 36029093909189922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (134218289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1315815 + ... + 1315916.

It is an arithmetic number, because the mean of its divisors is an integer number (23685588).

Almost surely, 2^134218281 is an apocalyptic number.

It is an amenable number.

134218281 is a deficient number, since it is larger than the sum of its proper divisors (55266423).

134218281 is a wasteful number, since it uses less digits than its factorization.

134218281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631751.

The product of its digits is 3072, while the sum is 30.

The square root of 134218281 is about 11585.2613695160. The cubic root of 134218281 is about 512.0007031749. Note that the first 3 decimals are identical.

The spelling of 134218281 in words is "one hundred thirty-four million, two hundred eighteen thousand, two hundred eighty-one".