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223444223 = 10910391973
BaseRepresentation
bin11010101000101…
…11110011111111
3120120110010211222
431110113303333
5424200203343
634101103555
75352146612
oct1524276377
9516403758
10223444223
11105145a52
12629b7bbb
13373a5322
1421966179
151493aa68
hexd517cff

223444223 has 8 divisors (see below), whose sum is σ = 225825600. Its totient is φ = 221069088.

The previous prime is 223444189. The next prime is 223444229. The reversal of 223444223 is 322444322.

It is a happy number.

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 223444223 - 28 = 223443967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223444192 and 223444201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223444229) 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 7 ways as a sum of consecutive naturals, for example, 112265 + ... + 114237.

It is an arithmetic number, because the mean of its divisors is an integer number (28228200).

Almost surely, 2223444223 is an apocalyptic number.

223444223 is a deficient number, since it is larger than the sum of its proper divisors (2381377).

223444223 is a wasteful number, since it uses less digits than its factorization.

223444223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121.

The product of its digits is 9216, while the sum is 26.

The square root of 223444223 is about 14948.0508093865. The cubic root of 223444223 is about 606.8150967504.

Adding to 223444223 its reverse (322444322), we get a palindrome (545888545).

Subtracting 223444223 from its reverse (322444322), we obtain a palindrome (99000099).

The spelling of 223444223 in words is "two hundred twenty-three million, four hundred forty-four thousand, two hundred twenty-three".

Divisors: 1 109 1039 1973 113251 215057 2049947 223444223