Base | Representation |
---|---|
bin | 11011100010100… |
… | …10101000110000 |
3 | 121002201021222220 |
4 | 31301102220300 |
5 | 433120301300 |
6 | 34531401040 |
7 | 5503452600 |
oct | 1561225060 |
9 | 532637886 |
10 | 231025200 |
11 | 10945371a |
12 | 65453180 |
13 | 38b2ab03 |
14 | 2297ac00 |
15 | 15436da0 |
hex | dc52a30 |
231025200 has 180 divisors, whose sum is σ = 861094440. Its totient is φ = 52792320.
The previous prime is 231025129. The next prime is 231025229. The reversal of 231025200 is 2520132.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a self number, because there is not a number n which added to its sum of digits gives 231025200.
It is an unprimeable number.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 56836 + ... + 60764.
It is an arithmetic number, because the mean of its divisors is an integer number (4783858).
Almost surely, 2231025200 is an apocalyptic number.
231025200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 231025200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430547220).
231025200 is an abundant number, since it is smaller than the sum of its proper divisors (630069240).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
231025200 is a wasteful number, since it uses less digits than its factorization.
231025200 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3964 (or 3946 counting only the distinct ones).
The product of its (nonzero) digits is 120, while the sum is 15.
The square root of 231025200 is about 15199.5131500979. The cubic root of 231025200 is about 613.6015551274.
Adding to 231025200 its reverse (2520132), we get a palindrome (233545332).
The spelling of 231025200 in words is "two hundred thirty-one million, twenty-five thousand, two hundred".
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