81017134 has 8 divisors (see below), whose sum is σ = 132573528. Its totient is φ = 36825960.

The previous prime is 81017119. The next prime is 81017171. The reversal of 81017134 is 43171018.

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

It is a junction number, because it is equal to n+sod(n) for n = 81017099 and 81017108.

It is a congruent number.

It is an unprimeable number.

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, 1841277 + ... + 1841320.

It is an arithmetic number, because the mean of its divisors is an integer number (16571691).

Almost surely, 2^81017134 is an apocalyptic number.

81017134 is a deficient number, since it is larger than the sum of its proper divisors (51556394).

81017134 is a wasteful number, since it uses less digits than its factorization.

81017134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682610.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 81017134 is about 9000.9518385557. The cubic root of 81017134 is about 432.7053769711.

The spelling of 81017134 in words is "eighty-one million, seventeen thousand, one hundred thirty-four".