Base | Representation |
---|---|
bin | 11011011100011… |
… | …00010110100111 |
3 | 121001012000220120 |
4 | 31232030112213 |
5 | 432413304111 |
6 | 34502133023 |
7 | 5463531006 |
oct | 1556142647 |
9 | 531160816 |
10 | 230213031 |
11 | 108a49504 |
12 | 65121173 |
13 | 38905239 |
14 | 22808c3d |
15 | 15326406 |
hex | db8c5a7 |
230213031 has 16 divisors (see below), whose sum is σ = 329126400. Its totient is φ = 142616448.
The previous prime is 230213023. The next prime is 230213041. The reversal of 230213031 is 130312032.
It is not a de Polignac number, because 230213031 - 23 = 230213023 is a prime.
It is a super-2 number, since 2×2302130312 = 105996079284413922, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 230213031.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (230213041) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24541 + ... + 32598.
It is an arithmetic number, because the mean of its divisors is an integer number (20570400).
Almost surely, 2230213031 is an apocalyptic number.
230213031 is a deficient number, since it is larger than the sum of its proper divisors (98913369).
230213031 is a wasteful number, since it uses less digits than its factorization.
230213031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 57238.
The product of its (nonzero) digits is 108, while the sum is 15.
The square root of 230213031 is about 15172.7726866252. The cubic root of 230213031 is about 612.8816722090.
Adding to 230213031 its reverse (130312032), we get a palindrome (360525063).
Subtracting from 230213031 its reverse (130312032), we obtain a palindrome (99900999).
The spelling of 230213031 in words is "two hundred thirty million, two hundred thirteen thousand, thirty-one".
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