| Base | Representation |
|---|---|
| bin | 1011110100101100010… |
| … | …1001101100001011100 |
| 3 | 201102021222222122000200 |
| 4 | 2331023011031201130 |
| 5 | 11311444004321340 |
| 6 | 233151413223500 |
| 7 | 20450403014526 |
| oct | 2751305154134 |
| 9 | 642258878020 |
| 10 | 203123120220 |
| 11 | 79164784699 |
| 12 | 33449631b90 |
| 13 | 162013808c7 |
| 14 | 9b8cbb6a16 |
| 15 | 543c738330 |
| hex | 2f4b14d85c |
203123120220 has 144 divisors (see below), whose sum is σ = 633176177088. Its totient is φ = 52670269440.
The previous prime is 203123120201. The next prime is 203123120261. The reversal of 203123120220 is 22021321302.
203123120220 is a `hidden beast` number, since 20 + 312 + 312 + 0 + 2 + 20 = 666.
203123120220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 203123120193 and 203123120202.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12186132 + ... + 12202788.
Almost surely, 2203123120220 is an apocalyptic number.
203123120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 203123120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316588088544).
203123120220 is an abundant number, since it is smaller than the sum of its proper divisors (430053056868).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
203123120220 is a wasteful number, since it uses less digits than its factorization.
203123120220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 18540 (or 18535 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 18.
Adding to 203123120220 its reverse (22021321302), we get a palindrome (225144441522).
The spelling of 203123120220 in words is "two hundred three billion, one hundred twenty-three million, one hundred twenty thousand, two hundred twenty".
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