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230231144 = 231113201251
BaseRepresentation
bin11011011100100…
…00110001101000
3121001012221202102
431232100301220
5432414344034
634502352532
75463634553
oct1556206150
9531187672
10230231144
11108a61080
126512b748
1338910560
142281169a
151532b97e
hexdb90c68

230231144 has 32 divisors (see below), whose sum is σ = 507155040. Its totient is φ = 96600000.

The previous prime is 230231117. The next prime is 230231161. The reversal of 230231144 is 441132032.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99482 + ... + 101769.

It is an arithmetic number, because the mean of its divisors is an integer number (15848595).

Almost surely, 2230231144 is an apocalyptic number.

It is an amenable number.

230231144 is an abundant number, since it is smaller than the sum of its proper divisors (276923896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230231144 is a wasteful number, since it uses less digits than its factorization.

230231144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201281 (or 201277 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 230231144 is about 15173.3695664477. The cubic root of 230231144 is about 612.8977454877.

Adding to 230231144 its reverse (441132032), we get a palindrome (671363176).

The spelling of 230231144 in words is "two hundred thirty million, two hundred thirty-one thousand, one hundred forty-four".

Divisors: 1 2 4 8 11 13 22 26 44 52 88 104 143 286 572 1144 201251 402502 805004 1610008 2213761 2616263 4427522 5232526 8855044 10465052 17710088 20930104 28778893 57557786 115115572 230231144