163081 has 8 divisors (see below), whose sum is σ = 176904. Its totient is φ = 149760.

The previous prime is 163063. The next prime is 163109. The reversal of 163081 is 180361.

163081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 15625 + 147456 = 125^2 + 384^2 .

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 163081 - 2¹¹ = 161033 is a prime.

It is a super-2 number, since 2×163081² = 53190825122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163021) 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, 811 + ... + 991.

It is an arithmetic number, because the mean of its divisors is an integer number (22113).

2¹⁶³⁰⁸¹ is an apocalyptic number.

It is an amenable number.

163081 is a deficient number, since it is larger than the sum of its proper divisors (13823).

163081 is a wasteful number, since it uses less digits than its factorization.

163081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 163081 is about 403.8328862289. The cubic root of 163081 is about 54.6346026193.

It can be divided in two parts, 1630 and 81, that added together give a triangular number (1711 = T₅₈).

The spelling of 163081 in words is "one hundred sixty-three thousand, eighty-one".