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23144223 = 3191512689
BaseRepresentation
bin101100001001…
…0011100011111
31121112211220110
41120102130133
521411103343
62144021103
7400502604
oct130223437
947484813
1023144223
1112078663
127901793
134a4460b
1431066ab
152072833
hex161271f

23144223 has 16 divisors (see below), whose sum is σ = 32710400. Its totient is φ = 14515200.

The previous prime is 23144201. The next prime is 23144227. The reversal of 23144223 is 32244132.

It is not a de Polignac number, because 23144223 - 210 = 23143199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23144223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23144227) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7263 + ... + 9951.

It is an arithmetic number, because the mean of its divisors is an integer number (2044400).

Almost surely, 223144223 is an apocalyptic number.

23144223 is a deficient number, since it is larger than the sum of its proper divisors (9566177).

23144223 is a wasteful number, since it uses less digits than its factorization.

23144223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862.

The product of its digits is 1152, while the sum is 21.

The square root of 23144223 is about 4810.8443125921. The cubic root of 23144223 is about 284.9798816208.

Adding to 23144223 its reverse (32244132), we get a palindrome (55388355).

Subtracting 23144223 from its reverse (32244132), we obtain a palindrome (9099909).

The spelling of 23144223 in words is "twenty-three million, one hundred forty-four thousand, two hundred twenty-three".

Divisors: 1 3 19 57 151 453 2689 2869 8067 8607 51091 153273 406039 1218117 7714741 23144223