Base | Representation |
---|---|
bin | 10011110110010111… |
… | …001100010111111000 |
3 | 2001000100102220121021 |
4 | 103312113030113320 |
5 | 322122131104222 |
6 | 13442514352224 |
7 | 1353105510655 |
oct | 236627142770 |
9 | 61010386537 |
10 | 21313144312 |
11 | 9047794859 |
12 | 416988b674 |
13 | 20187656c5 |
14 | 1062868c2c |
15 | 84b1a5ac7 |
hex | 4f65cc5f8 |
21313144312 has 16 divisors (see below), whose sum is σ = 40103358840. Its totient is φ = 10618915296.
The previous prime is 21313144309. The next prime is 21313144337. The reversal of 21313144312 is 21344131312.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4704703 + ... + 4709230.
Almost surely, 221313144312 is an apocalyptic number.
It is an amenable number.
21313144312 is a deficient number, since it is larger than the sum of its proper divisors (18790214528).
21313144312 is a wasteful number, since it uses less digits than its factorization.
21313144312 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9414222 (or 9414218 counting only the distinct ones).
The product of its digits is 1728, while the sum is 25.
Adding to 21313144312 its reverse (21344131312), we get a palindrome (42657275624).
The spelling of 21313144312 in words is "twenty-one billion, three hundred thirteen million, one hundred forty-four thousand, three hundred twelve".
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