Base | Representation |
---|---|
bin | 10010101000000111… |
… | …001000101110010101 |
3 | 1220121212010010112012 |
4 | 102220013020232111 |
5 | 311430034442323 |
6 | 13104340034005 |
7 | 1305424564100 |
oct | 225007105625 |
9 | 56555103465 |
10 | 20000312213 |
11 | 8533722652 |
12 | 3a62092905 |
13 | 1b69786a8b |
14 | d7a367737 |
15 | 7c0ccd678 |
hex | 4a81c8b95 |
20000312213 has 24 divisors (see below), whose sum is σ = 23849219520. Its totient is φ = 16713708480.
The previous prime is 20000312203. The next prime is 20000312219. The reversal of 20000312213 is 31221300002.
It is a happy number.
It is not a de Polignac number, because 20000312213 - 24 = 20000312197 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20000312219) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4423568 + ... + 4428086.
It is an arithmetic number, because the mean of its divisors is an integer number (993717480).
Almost surely, 220000312213 is an apocalyptic number.
It is an amenable number.
20000312213 is a deficient number, since it is larger than the sum of its proper divisors (3848907307).
20000312213 is a wasteful number, since it uses less digits than its factorization.
20000312213 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6777 (or 6770 counting only the distinct ones).
The product of its (nonzero) digits is 72, while the sum is 14.
Adding to 20000312213 its reverse (31221300002), we get a palindrome (51221612215).
The spelling of 20000312213 in words is "twenty billion, three hundred twelve thousand, two hundred thirteen".
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