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230510205 = 345569161
BaseRepresentation
bin11011011110101…
…00111001111101
3121001202010120000
431233110321331
5433002311310
634512344513
75466206262
oct1557247175
9531663500
10230510205
11109131802
1265245139
13389aa593
1422885269
15153844c0
hexdbd4e7d

230510205 has 20 divisors (see below), whose sum is σ = 413211612. Its totient is φ = 122938560.

The previous prime is 230510153. The next prime is 230510219. The reversal of 230510205 is 502015032.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 150479289 + 80030916 = 12267^2 + 8946^2 .

It is not a de Polignac number, because 230510205 - 212 = 230506109 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 284176 + ... + 284985.

Almost surely, 2230510205 is an apocalyptic number.

It is an amenable number.

230510205 is a deficient number, since it is larger than the sum of its proper divisors (182701407).

230510205 is an equidigital number, since it uses as much as digits as its factorization.

230510205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569178 (or 569169 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 230510205 is about 15182.5625307456. The cubic root of 230510205 is about 613.1452746992.

Adding to 230510205 its reverse (502015032), we get a palindrome (732525237).

The spelling of 230510205 in words is "two hundred thirty million, five hundred ten thousand, two hundred five".

Divisors: 1 3 5 9 15 27 45 81 135 405 569161 1707483 2845805 5122449 8537415 15367347 25612245 46102041 76836735 230510205