Base | Representation |
---|---|
bin | 11011011010111… |
… | …01011111110111 |
3 | 121000211021122102 |
4 | 31231131133313 |
5 | 432341133421 |
6 | 34454052315 |
7 | 5462101325 |
oct | 1555353767 |
9 | 530737572 |
10 | 230021111 |
11 | 1089282a1 |
12 | 6504a09b |
13 | 38868a88 |
14 | 22798d15 |
15 | 152d960b |
hex | db5d7f7 |
230021111 has 8 divisors (see below), whose sum is σ = 236670000. Its totient is φ = 223421760.
The previous prime is 230021089. The next prime is 230021131. The reversal of 230021111 is 111120032.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 230021111 - 226 = 162912247 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 230021092 and 230021101.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (230021131) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2861 + ... + 21638.
It is an arithmetic number, because the mean of its divisors is an integer number (29583750).
Almost surely, 2230021111 is an apocalyptic number.
230021111 is a deficient number, since it is larger than the sum of its proper divisors (6648889).
230021111 is a wasteful number, since it uses less digits than its factorization.
230021111 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 24769.
The product of its (nonzero) digits is 12, while the sum is 11.
The square root of 230021111 is about 15166.4468811914. The cubic root of 230021111 is about 612.7113126780.
Adding to 230021111 its reverse (111120032), we get a palindrome (341141143).
The spelling of 230021111 in words is "two hundred thirty million, twenty-one thousand, one hundred eleven".
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