Base | Representation |
---|---|
bin | 11001011010100… |
… | …11000110100001 |
3 | 112212011202012221 |
4 | 30231103012201 |
5 | 414034420223 |
6 | 33053351041 |
7 | 5166116113 |
oct | 1455230641 |
9 | 485152187 |
10 | 213201313 |
11 | aa38a336 |
12 | 5b498481 |
13 | 3522a030 |
14 | 2045b3b3 |
15 | 13ab5b5d |
hex | cb531a1 |
213201313 has 4 divisors (see below), whose sum is σ = 229601428. Its totient is φ = 196801200.
The previous prime is 213201293. The next prime is 213201341. The reversal of 213201313 is 313102312.
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 127509264 + 85692049 = 11292^2 + 9257^2 .
It is a cyclic number.
It is not a de Polignac number, because 213201313 - 213 = 213193121 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (213201343) 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 in 3 ways as a sum of consecutive naturals, for example, 8200038 + ... + 8200063.
It is an arithmetic number, because the mean of its divisors is an integer number (57400357).
Almost surely, 2213201313 is an apocalyptic number.
It is an amenable number.
213201313 is a deficient number, since it is larger than the sum of its proper divisors (16400115).
213201313 is a wasteful number, since it uses less digits than its factorization.
213201313 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 16400114.
The product of its (nonzero) digits is 108, while the sum is 16.
The square root of 213201313 is about 14601.4147602210. The cubic root of 213201313 is about 597.3973498255.
Adding to 213201313 its reverse (313102312), we get a palindrome (526303625).
Subtracting 213201313 from its reverse (313102312), we obtain a palindrome (99900999).
The spelling of 213201313 in words is "two hundred thirteen million, two hundred one thousand, three hundred thirteen".
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