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230304221 = 7231430461
BaseRepresentation
bin11011011101000…
…10100111011101
3121001100122222222
431232202213131
5432424213341
634504115125
75464360610
oct1556424735
9531318888
10230304221
11109000a74
1265165aa5
13389378b4
1422830177
151534344b
hexdba29dd

230304221 has 8 divisors (see below), whose sum is σ = 274648704. Its totient is φ = 188820720.

The previous prime is 230304211. The next prime is 230304227. The reversal of 230304221 is 122403032.

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 230304221 - 218 = 230042077 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 230304221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230304227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715070 + ... + 715391.

It is an arithmetic number, because the mean of its divisors is an integer number (34331088).

Almost surely, 2230304221 is an apocalyptic number.

It is an amenable number.

230304221 is a deficient number, since it is larger than the sum of its proper divisors (44344483).

230304221 is a wasteful number, since it uses less digits than its factorization.

230304221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430491.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 230304221 is about 15175.7774430175. Note that the first 3 decimals coincide. The cubic root of 230304221 is about 612.9625846603.

Adding to 230304221 its reverse (122403032), we get a palindrome (352707253).

The spelling of 230304221 in words is "two hundred thirty million, three hundred four thousand, two hundred twenty-one".

Divisors: 1 7 23 161 1430461 10013227 32900603 230304221