Base | Representation |
---|---|
bin | 1110101010101… |
… | …00100111111101 |
3 | 22120111120110011 |
4 | 13111110213331 |
5 | 222443430023 |
6 | 20112543221 |
7 | 3022511041 |
oct | 725244775 |
9 | 276446404 |
10 | 123030013 |
11 | 634a12a7 |
12 | 35251b11 |
13 | 1c648132 |
14 | 124a8021 |
15 | ac0350d |
hex | 75549fd |
123030013 has 8 divisors (see below), whose sum is σ = 130802688. Its totient is φ = 115459344.
The previous prime is 123029999. The next prime is 123030029. The reversal of 123030013 is 310030321.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-123030013 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 123029975 and 123030002.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (123030043) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49245 + ... + 51682.
It is an arithmetic number, because the mean of its divisors is an integer number (16350336).
Almost surely, 2123030013 is an apocalyptic number.
It is an amenable number.
123030013 is a deficient number, since it is larger than the sum of its proper divisors (7772675).
123030013 is a wasteful number, since it uses less digits than its factorization.
123030013 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 101003.
The product of its (nonzero) digits is 54, while the sum is 13.
The square root of 123030013 is about 11091.8895144155. The cubic root of 123030013 is about 497.3594299957.
Adding to 123030013 its reverse (310030321), we get a palindrome (433060334).
The spelling of 123030013 in words is "one hundred twenty-three million, thirty thousand, thirteen".
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