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163331 = 723333
BaseRepresentation
bin100111111000000011
322022001022
4213320003
520211311
63300055
71250120
oct477003
9268038
10163331
11101793
127a62b
135945c
1443747
15335db
hex27e03

163331 has 4 divisors (see below), whose sum is σ = 186672. Its totient is φ = 139992.

The previous prime is 163327. The next prime is 163337. The reversal of 163331 is 133361.

163331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133361 = 197019.

It is a cyclic number.

It is not a de Polignac number, because 163331 - 22 = 163327 is a prime.

It is a super-2 number, since 2×1633312 = 53354031122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (163337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11660 + ... + 11673.

It is an arithmetic number, because the mean of its divisors is an integer number (46668).

2163331 is an apocalyptic number.

163331 is a deficient number, since it is larger than the sum of its proper divisors (23341).

163331 is an equidigital number, since it uses as much as digits as its factorization.

163331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23340.

The product of its digits is 162, while the sum is 17.

The square root of 163331 is about 404.1423016711. The cubic root of 163331 is about 54.6625062932.

Adding to 163331 its reverse (133361), we get a palindrome (296692).

It can be divided in two parts, 163 and 331, that added together give a palindrome (494).

The spelling of 163331 in words is "one hundred sixty-three thousand, three hundred thirty-one".

Divisors: 1 7 23333 163331