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230221343 = 1129721697
BaseRepresentation
bin11011011100011…
…10011000011111
3121001012110022102
431232032120133
5432414040333
634502235315
75463564152
oct1556163037
9531173272
10230221343
11108a54780
1265125b3b
1338908c61
142280bc99
1515328ae8
hexdb8e61f

230221343 has 8 divisors (see below), whose sum is σ = 259811280. Its totient is φ = 202074880.

The previous prime is 230221331. The next prime is 230221393. The reversal of 230221343 is 343122032.

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 230221343 - 218 = 229959199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230221393) 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, 360530 + ... + 361167.

It is an arithmetic number, because the mean of its divisors is an integer number (32476410).

Almost surely, 2230221343 is an apocalyptic number.

230221343 is a deficient number, since it is larger than the sum of its proper divisors (29589937).

230221343 is a wasteful number, since it uses less digits than its factorization.

230221343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721737.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 230221343 is about 15173.0465958554. The cubic root of 230221343 is about 612.8890482919.

Adding to 230221343 its reverse (343122032), we get a palindrome (573343375).

The spelling of 230221343 in words is "two hundred thirty million, two hundred twenty-one thousand, three hundred forty-three".

Divisors: 1 11 29 319 721697 7938667 20929213 230221343