Base | Representation |
---|---|
bin | 1010011011110001… |
… | …0100101000110111 |
3 | 21020012020221212122 |
4 | 2212330110220313 |
5 | 21214003043111 |
6 | 1141531310155 |
7 | 126256446065 |
oct | 24674245067 |
9 | 7205227778 |
10 | 2800831031 |
11 | 1207aa5899 |
12 | 661bab35b |
13 | 35835b58b |
14 | 1c7d9d035 |
15 | 115d50cdb |
hex | a6f14a37 |
2800831031 has 2 divisors, whose sum is σ = 2800831032. Its totient is φ = 2800831030.
The previous prime is 2800831013. The next prime is 2800831127. The reversal of 2800831031 is 1301380082.
Together with previous prime (2800831013) it forms an Ormiston pair, because they use the same digits, order apart.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-2800831031 is a prime.
It is a super-2 number, since 2×28008310312 = 15689308928425045922, which contains 22 as substring.
It is a Sophie Germain prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2800831931) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1400415515 + 1400415516.
It is an arithmetic number, because the mean of its divisors is an integer number (1400415516).
Almost surely, 22800831031 is an apocalyptic number.
2800831031 is a deficient number, since it is larger than the sum of its proper divisors (1).
2800831031 is an equidigital number, since it uses as much as digits as its factorization.
2800831031 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1152, while the sum is 26.
The square root of 2800831031 is about 52922.8781435779. The cubic root of 2800831031 is about 1409.5991736608.
The spelling of 2800831031 in words is "two billion, eight hundred million, eight hundred thirty-one thousand, thirty-one".
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