Base | Representation |
---|---|
bin | 100100101010010… |
… | …0011000101000010 |
3 | 10011201200201222100 |
4 | 1021110203011002 |
5 | 10004402421310 |
6 | 322021451230 |
7 | 42324606252 |
oct | 11124430502 |
9 | 3151621870 |
10 | 1230123330 |
11 | 581410957 |
12 | 2a3b70b16 |
13 | 167b10637 |
14 | b9531962 |
15 | 72edaec0 |
hex | 49523142 |
1230123330 has 24 divisors (see below), whose sum is σ = 3198320892. Its totient is φ = 328032864.
The previous prime is 1230123319. The next prime is 1230123331. The reversal of 1230123330 is 333210321.
1230123330 is a `hidden beast` number, since 12 + 301 + 23 + 330 = 666.
It can be written as a sum of positive squares in 2 ways, for example, as 1198752129 + 31371201 = 34623^2 + 5601^2 .
It is a Harshad number since it is a multiple of its sum of digits (18).
It is not an unprimeable number, because it can be changed into a prime (1230123331) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6833929 + ... + 6834108.
Almost surely, 21230123330 is an apocalyptic number.
1230123330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1230123330 is an abundant number, since it is smaller than the sum of its proper divisors (1968197562).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1230123330 is a wasteful number, since it uses less digits than its factorization.
1230123330 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 13668050 (or 13668047 counting only the distinct ones).
The product of its (nonzero) digits is 324, while the sum is 18.
The square root of 1230123330 is about 35073.1140619136. The cubic root of 1230123330 is about 1071.4770790229.
Adding to 1230123330 its reverse (333210321), we get a palindrome (1563333651).
The spelling of 1230123330 in words is "one billion, two hundred thirty million, one hundred twenty-three thousand, three hundred thirty".
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