Base | Representation |
---|---|
bin | 111011010000… |
… | …0111101100001 |
3 | 2011110102021201 |
4 | 1312200331201 |
5 | 30423134001 |
6 | 3025521201 |
7 | 525034156 |
oct | 166407541 |
9 | 64412251 |
10 | 31068001 |
11 | 1659a938 |
12 | a4a3201 |
13 | 658a143 |
14 | 41aa22d |
15 | 2ada501 |
hex | 1da0f61 |
31068001 has 2 divisors, whose sum is σ = 31068002. Its totient is φ = 31068000.
The previous prime is 31067999. The next prime is 31068013. The reversal of 31068001 is 10086013.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 26010000 + 5058001 = 5100^2 + 2249^2 .
It is a cyclic number.
It is not a de Polignac number, because 31068001 - 21 = 31067999 is a prime.
It is a super-2 number, since 2×310680012 = 1930441372272002, which contains 22 as substring.
Together with 31067999, it forms a pair of twin primes.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 31068001.
It is not a weakly prime, because it can be changed into another prime (31068041) 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, 15534000 + 15534001.
It is an arithmetic number, because the mean of its divisors is an integer number (15534001).
Almost surely, 231068001 is an apocalyptic number.
It is an amenable number.
31068001 is a deficient number, since it is larger than the sum of its proper divisors (1).
31068001 is an equidigital number, since it uses as much as digits as its factorization.
31068001 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 144, while the sum is 19.
The square root of 31068001 is about 5573.8676877012. The cubic root of 31068001 is about 314.3675932181.
The spelling of 31068001 in words is "thirty-one million, sixty-eight thousand, one".
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