The Number

81009

Eighty-One Thousand and Nine

In Base 12 Duodecimal Is

3aa6912

The numbers with a 12 subscript use Base 12 Duodecimal notation.

For more familiar numbers: See Eighty-One Thousand and Nine in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

81006
3aa6612
Eighty-One Thousand and Six in Base 12 Duodecimal
81007
3aa6712
Eighty-One Thousand and Seven in Base 12 Duodecimal
81008
3aa6812
Eighty-One Thousand and Eight in Base 12 Duodecimal
81010
3aa6a12
Eighty-One Thousand and Ten in Base 12 Duodecimal
81011
3aa6b12
Eighty-One Thousand and Eleven in Base 12 Duodecimal
81012
3aa7012
Eighty-One Thousand and Twelve in Base 12 Duodecimal

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

8.1009e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000030a39ab8b3b99a812

The reciprocal of 81009 in Base 12 Duodecimal.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 3aa6912 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Eighty-one thousand and nine is a composite number with 6 total factors (including 1 and itself).   See primes in Base 12 Duodecimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand and nine is a composite number with 6 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number eighty-one thousand and nine has the following 2 prime factors:

3
312
Three in Base 12 Duodecimal
9001
526112
Nine Thousand and One in Base 12 Duodecimal

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

3122 · 5261121 = 3aa6912

Base Conversions

The number eighty-one thousand and nine in 35 different bases