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223442223 = 31937531999
BaseRepresentation
bin11010101000101…
…11010100101111
3120120110001002220
431110113110233
5424200122343
634101050423
75352141024
oct1524272457
9516401086
10223442223
111051444a4
12629b6a13
13373a4444
142196554b
151493a183
hexd51752f

223442223 has 32 divisors (see below), whose sum is σ = 328320000. Its totient is φ = 134649216.

The previous prime is 223442213. The next prime is 223442239. The reversal of 223442223 is 322244322.

It is a happy number.

It is not a de Polignac number, because 223442223 - 213 = 223434031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223442193 and 223442202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223442213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110778 + ... + 112776.

It is an arithmetic number, because the mean of its divisors is an integer number (10260000).

Almost surely, 2223442223 is an apocalyptic number.

223442223 is a deficient number, since it is larger than the sum of its proper divisors (104877777).

223442223 is a wasteful number, since it uses less digits than its factorization.

223442223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111.

The product of its digits is 4608, while the sum is 24.

The square root of 223442223 is about 14947.9839108824. The cubic root of 223442223 is about 606.8132862556.

Adding to 223442223 its reverse (322244322), we get a palindrome (545686545).

The spelling of 223442223 in words is "two hundred twenty-three million, four hundred forty-two thousand, two hundred twenty-three".

Divisors: 1 3 19 37 53 57 111 159 703 1007 1961 1999 2109 3021 5883 5997 37259 37981 73963 105947 111777 113943 221889 317841 1405297 2012993 3920039 4215891 6038979 11760117 74480741 223442223