Base | Representation |
---|---|
bin | 10110101110011101… |
… | …01000010001110111 |
3 | 1011111022002110121021 |
4 | 23113032220101313 |
5 | 144441410333111 |
6 | 5334403002011 |
7 | 611230456366 |
oct | 132716502167 |
9 | 34438073537 |
10 | 12200871031 |
11 | 51a1089a98 |
12 | 2446069307 |
13 | 11c596541b |
14 | 83a5897dd |
15 | 4b61ecd71 |
hex | 2d73a8477 |
12200871031 has 2 divisors, whose sum is σ = 12200871032. Its totient is φ = 12200871030.
The previous prime is 12200871029. The next prime is 12200871091. The reversal of 12200871031 is 13017800221.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 12200871031 - 21 = 12200871029 is a prime.
It is a super-2 number, since 2×122008710312 (a number of 21 digits) contains 22 as substring.
Together with 12200871029, it forms a pair of twin primes.
It is a junction number, because it is equal to n+sod(n) for n = 12200870987 and 12200871005.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12200871091) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100435515 + 6100435516.
It is an arithmetic number, because the mean of its divisors is an integer number (6100435516).
Almost surely, 212200871031 is an apocalyptic number.
12200871031 is a deficient number, since it is larger than the sum of its proper divisors (1).
12200871031 is an equidigital number, since it uses as much as digits as its factorization.
12200871031 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 672, while the sum is 25.
The spelling of 12200871031 in words is "twelve billion, two hundred million, eight hundred seventy-one thousand, thirty-one".
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