Base | Representation |
---|---|
bin | 11000111111111011… |
… | …11001000101110101 |
3 | 1021122100101121222010 |
4 | 30133331321011311 |
5 | 204441313021323 |
6 | 10055435154433 |
7 | 653406326622 |
oct | 143775710565 |
9 | 37570347863 |
10 | 13421220213 |
11 | 5767a24435 |
12 | 27268a5a19 |
13 | 135b732c2b |
14 | 914695349 |
15 | 538407c93 |
hex | 31ff79175 |
13421220213 has 16 divisors (see below), whose sum is σ = 18521395200. Its totient is φ = 8634575040.
The previous prime is 13421220179. The next prime is 13421220223. The reversal of 13421220213 is 31202212431.
It is not a de Polignac number, because 13421220213 - 26 = 13421220149 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 13421220213.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13421220223) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138508 + ... + 214538.
It is an arithmetic number, because the mean of its divisors is an integer number (1157587200).
Almost surely, 213421220213 is an apocalyptic number.
It is an amenable number.
13421220213 is a deficient number, since it is larger than the sum of its proper divisors (5100174987).
13421220213 is a wasteful number, since it uses less digits than its factorization.
13421220213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 78092.
The product of its (nonzero) digits is 576, while the sum is 21.
Adding to 13421220213 its reverse (31202212431), we get a palindrome (44623432644).
The spelling of 13421220213 in words is "thirteen billion, four hundred twenty-one million, two hundred twenty thousand, two hundred thirteen".
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