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230443143 = 3717645499
BaseRepresentation
bin11011011110001…
…00100010000111
3121001121201120020
431233010202013
5432443140033
634511110223
75465506620
oct1557044207
9531551506
10230443143
11109096387
1265212373
1338985bb8
1422868a47
151536e6b3
hexdbc4887

230443143 has 16 divisors (see below), whose sum is σ = 371808000. Its totient is φ = 123935616.

The previous prime is 230443139. The next prime is 230443163. The reversal of 230443143 is 341344032.

230443143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 230443143 - 22 = 230443139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230443123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322393 + ... + 323106.

It is an arithmetic number, because the mean of its divisors is an integer number (23238000).

Almost surely, 2230443143 is an apocalyptic number.

230443143 is a deficient number, since it is larger than the sum of its proper divisors (141364857).

230443143 is a wasteful number, since it uses less digits than its factorization.

230443143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645526.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 230443143 is about 15180.3538496308. The cubic root of 230443143 is about 613.0858084432.

Adding to 230443143 its reverse (341344032), we get a palindrome (571787175).

The spelling of 230443143 in words is "two hundred thirty million, four hundred forty-three thousand, one hundred forty-three".

Divisors: 1 3 7 17 21 51 119 357 645499 1936497 4518493 10973483 13555479 32920449 76814381 230443143