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223042213 = 474745579
BaseRepresentation
bin11010100101101…
…01101010100101
3120112200201101201
431102311222211
5424044322323
634044322501
75345553562
oct1522655245
9515621351
10223042213
111049a0a09
1262843431
1337294354
142189d869
15148ab8ad
hexd4b5aa5

223042213 has 4 divisors (see below), whose sum is σ = 227787840. Its totient is φ = 218296588.

The previous prime is 223042199. The next prime is 223042223. The reversal of 223042213 is 312240322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 223042213 - 25 = 223042181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223042223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2372743 + ... + 2372836.

It is an arithmetic number, because the mean of its divisors is an integer number (56946960).

Almost surely, 2223042213 is an apocalyptic number.

It is an amenable number.

223042213 is a deficient number, since it is larger than the sum of its proper divisors (4745627).

223042213 is an equidigital number, since it uses as much as digits as its factorization.

223042213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4745626.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 223042213 is about 14934.5978519678. The cubic root of 223042213 is about 606.4509608621.

Adding to 223042213 its reverse (312240322), we get a palindrome (535282535).

The spelling of 223042213 in words is "two hundred twenty-three million, forty-two thousand, two hundred thirteen".

Divisors: 1 47 4745579 223042213