Base | Representation |
---|---|
bin | 100011110011010… |
… | …1001000100001001 |
3 | 10002201110222021101 |
4 | 1013212221010021 |
5 | 4430013441014 |
6 | 315112141401 |
7 | 41524661242 |
oct | 10746510411 |
9 | 3081428241 |
10 | 1201312009 |
11 | 567122547 |
12 | 296397861 |
13 | 161b63711 |
14 | b5791cc9 |
15 | 706e9474 |
hex | 479a9109 |
1201312009 has 2 divisors, whose sum is σ = 1201312010. Its totient is φ = 1201312008.
The previous prime is 1201312003. The next prime is 1201312043. The reversal of 1201312009 is 9002131021.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 998876025 + 202435984 = 31605^2 + 14228^2 .
It is a cyclic number.
It is not a de Polignac number, because 1201312009 - 23 = 1201312001 is a prime.
It is not a weakly prime, because it can be changed into another prime (1201312001) 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, 600656004 + 600656005.
It is an arithmetic number, because the mean of its divisors is an integer number (600656005).
Almost surely, 21201312009 is an apocalyptic number.
It is an amenable number.
1201312009 is a deficient number, since it is larger than the sum of its proper divisors (1).
1201312009 is an equidigital number, since it uses as much as digits as its factorization.
1201312009 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 108, while the sum is 19.
The square root of 1201312009 is about 34659.9481967299. The cubic root of 1201312009 is about 1063.0457107928.
The spelling of 1201312009 in words is "one billion, two hundred one million, three hundred twelve thousand, nine".
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