Base | Representation |
---|---|
bin | 10111010000100… |
… | …111000001101011 |
3 | 1000012021202002112 |
4 | 113100213001223 |
5 | 1244344330443 |
6 | 102415552535 |
7 | 12445621103 |
oct | 2720470153 |
9 | 1005252075 |
10 | 390230123 |
11 | 190302738 |
12 | aa82b74b |
13 | 62b006ca |
14 | 39b80203 |
15 | 243d3b18 |
hex | 1742706b |
390230123 has 2 divisors, whose sum is σ = 390230124. Its totient is φ = 390230122.
The previous prime is 390230111. The next prime is 390230131. The reversal of 390230123 is 321032093.
It is a strong prime.
It is an emirp because it is prime and its reverse (321032093) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 390230123 - 28 = 390229867 is a prime.
It is not a weakly prime, because it can be changed into another prime (390230623) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195115061 + 195115062.
It is an arithmetic number, because the mean of its divisors is an integer number (195115062).
Almost surely, 2390230123 is an apocalyptic number.
390230123 is a deficient number, since it is larger than the sum of its proper divisors (1).
390230123 is an equidigital number, since it uses as much as digits as its factorization.
390230123 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 972, while the sum is 23.
The square root of 390230123 is about 19754.2431644444. The cubic root of 390230123 is about 730.7580310041.
The spelling of 390230123 in words is "three hundred ninety million, two hundred thirty thousand, one hundred twenty-three".
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