Base | Representation |
---|---|
bin | 11011100010100… |
… | …10001111010000 |
3 | 121002201012202110 |
4 | 31301102033100 |
5 | 433120223233 |
6 | 34531345320 |
7 | 5503445046 |
oct | 1561221720 |
9 | 532635673 |
10 | 231023568 |
11 | 109452476 |
12 | 65452240 |
13 | 38b2a149 |
14 | 2297a396 |
15 | 15436663 |
hex | dc523d0 |
231023568 has 20 divisors (see below), whose sum is σ = 596811008. Its totient is φ = 77007840.
The previous prime is 231023549. The next prime is 231023579. The reversal of 231023568 is 865320132.
231023568 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
It is an unprimeable number.
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, 2406448 + ... + 2406543.
Almost surely, 2231023568 is an apocalyptic number.
It is an amenable number.
231023568 is an abundant number, since it is smaller than the sum of its proper divisors (365787440).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
231023568 is a wasteful number, since it uses less digits than its factorization.
231023568 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4813002 (or 4812996 counting only the distinct ones).
The product of its (nonzero) digits is 8640, while the sum is 30.
The square root of 231023568 is about 15199.4594640731. The cubic root of 231023568 is about 613.6001102632.
It can be divided in two parts, 2310 and 23568, that added together give a triangular number (25878 = T227).
The spelling of 231023568 in words is "two hundred thirty-one million, twenty-three thousand, five hundred sixty-eight".
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