87134181 has 8 divisors (see below), whose sum is σ = 116250624. Its totient is φ = 58053600.

The previous prime is 87134141. The next prime is 87134191. The reversal of 87134181 is 18143178.

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

It is not a de Polignac number, because 87134181 - 2⁷ = 87134053 is a prime.

It is a super-2 number, since 2×87134181² = 15184730997081522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87134141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2661 + ... + 13466.

It is an arithmetic number, because the mean of its divisors is an integer number (14531328).

Almost surely, 2^87134181 is an apocalyptic number.

It is an amenable number.

87134181 is a deficient number, since it is larger than the sum of its proper divisors (29116443).

87134181 is a wasteful number, since it uses less digits than its factorization.

87134181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17931.

The product of its digits is 5376, while the sum is 33.

The square root of 87134181 is about 9334.5691384230. The cubic root of 87134181 is about 443.3324468422.

The spelling of 87134181 in words is "eighty-seven million, one hundred thirty-four thousand, one hundred eighty-one".