Base | Representation |
---|---|
bin | 11011111111011011… |
… | …001000000111111111 |
3 | 2212120120222112020220 |
4 | 123333123020013333 |
5 | 443023101330043 |
6 | 21450201112423 |
7 | 2112536114616 |
oct | 337733100777 |
9 | 85516875226 |
10 | 30055105023 |
11 | 11823361279 |
12 | 59a9488713 |
13 | 2aac91a018 |
14 | 16518b087d |
15 | bad8b1483 |
hex | 6ff6c81ff |
30055105023 has 4 divisors (see below), whose sum is σ = 40073473368. Its totient is φ = 20036736680.
The previous prime is 30055105021. The next prime is 30055105039. The reversal of 30055105023 is 32050155003.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32050155003 = 3 ⋅10683385001.
It is a cyclic number.
It is not a de Polignac number, because 30055105023 - 21 = 30055105021 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 30055104984 and 30055105002.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30055105021) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5009184168 + ... + 5009184173.
It is an arithmetic number, because the mean of its divisors is an integer number (10018368342).
Almost surely, 230055105023 is an apocalyptic number.
30055105023 is a deficient number, since it is larger than the sum of its proper divisors (10018368345).
30055105023 is a wasteful number, since it uses less digits than its factorization.
30055105023 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10018368344.
The product of its (nonzero) digits is 2250, while the sum is 24.
The spelling of 30055105023 in words is "thirty billion, fifty-five million, one hundred five thousand, twenty-three".
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