Base | Representation |
---|---|
bin | 100100000110011… |
… | …0010101101110101 |
3 | 10010102022002001221 |
4 | 1020030302231311 |
5 | 4440044004023 |
6 | 320110350341 |
7 | 42005663551 |
oct | 11014625565 |
9 | 3112262057 |
10 | 1211313013 |
11 | 571833439 |
12 | 2997bb3b1 |
13 | 163c55881 |
14 | b6c36861 |
15 | 7152285d |
hex | 48332b75 |
1211313013 has 4 divisors (see below), whose sum is σ = 1212406380. Its totient is φ = 1210219648.
The previous prime is 1211312989. The next prime is 1211313049. The reversal of 1211313013 is 3103131121.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 441084004 + 770229009 = 21002^2 + 27753^2 .
It is a cyclic number.
It is not a de Polignac number, because 1211313013 - 25 = 1211312981 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1211313413) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545020 + ... + 547237.
It is an arithmetic number, because the mean of its divisors is an integer number (303101595).
Almost surely, 21211313013 is an apocalyptic number.
It is an amenable number.
1211313013 is a deficient number, since it is larger than the sum of its proper divisors (1093367).
1211313013 is a wasteful number, since it uses less digits than its factorization.
1211313013 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1093366.
The product of its (nonzero) digits is 54, while the sum is 16.
The square root of 1211313013 is about 34803.9223795250. The cubic root of 1211313013 is about 1065.9875380906.
Adding to 1211313013 its reverse (3103131121), we get a palindrome (4314444134).
The spelling of 1211313013 in words is "one billion, two hundred eleven million, three hundred thirteen thousand, thirteen".
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