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230143323 = 376714441
BaseRepresentation
bin11011011011110…
…11010101011011
3121001001111021210
431231323111123
5432404041243
634500434203
75463120534
oct1555732533
9531044253
10230143323
11108a010a3
12650a8963
13388ac5a7
14227cb68b
1515310933
hexdb7b55b

230143323 has 4 divisors (see below), whose sum is σ = 306857768. Its totient is φ = 153428880.

The previous prime is 230143283. The next prime is 230143327. The reversal of 230143323 is 323341032.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 230143323 - 26 = 230143259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230143323.

It is not an unprimeable number, because it can be changed into a prime (230143327) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 38357218 + ... + 38357223.

It is an arithmetic number, because the mean of its divisors is an integer number (76714442).

Almost surely, 2230143323 is an apocalyptic number.

230143323 is a deficient number, since it is larger than the sum of its proper divisors (76714445).

230143323 is an equidigital number, since it uses as much as digits as its factorization.

230143323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76714444.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 230143323 is about 15170.4753715894. The cubic root of 230143323 is about 612.8198062231.

Adding to 230143323 its reverse (323341032), we get a palindrome (553484355).

The spelling of 230143323 in words is "two hundred thirty million, one hundred forty-three thousand, three hundred twenty-three".

Divisors: 1 3 76714441 230143323