Base | Representation |
---|---|
bin | 1100010001110… |
… | …10100001110101 |
3 | 21011210221200112 |
4 | 12020322201311 |
5 | 202332001211 |
6 | 14115352405 |
7 | 2360326034 |
oct | 610724165 |
9 | 234727615 |
10 | 103000181 |
11 | 53160619 |
12 | 2a5b2705 |
13 | 1845426b |
14 | d97271b |
15 | 909888b |
hex | 623a875 |
103000181 has 2 divisors, whose sum is σ = 103000182. Its totient is φ = 103000180.
The previous prime is 103000111. The next prime is 103000201. The reversal of 103000181 is 181000301.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 71740900 + 31259281 = 8470^2 + 5591^2 .
It is an emirp because it is prime and its reverse (181000301) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 103000181 - 218 = 102738037 is a prime.
It is a super-2 number, since 2×1030001812 = 21218074572065522, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (103000111) by changing a digit.
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 as a sum of consecutive naturals, namely, 51500090 + 51500091.
It is an arithmetic number, because the mean of its divisors is an integer number (51500091).
Almost surely, 2103000181 is an apocalyptic number.
It is an amenable number.
103000181 is a deficient number, since it is larger than the sum of its proper divisors (1).
103000181 is an equidigital number, since it uses as much as digits as its factorization.
103000181 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 24, while the sum is 14.
The square root of 103000181 is about 10148.9004823183. The cubic root of 103000181 is about 468.7550893433.
Adding to 103000181 its reverse (181000301), we get a palindrome (284000482).
The spelling of 103000181 in words is "one hundred three million, one hundred eighty-one", and thus it is an aban number.
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