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223424223 = 31131218401
BaseRepresentation
bin11010101000100…
…10111011011111
3120120102010102020
431110102323133
5424144033343
634100431223
75352034401
oct1524227337
9516363366
10223424223
11105131a20
12629a8513
13373991a9
142195cb71
1514934b83
hexd512edf

223424223 has 16 divisors (see below), whose sum is σ = 335465472. Its totient is φ = 131040000.

The previous prime is 223424213. The next prime is 223424261. The reversal of 223424223 is 322424322.

It is a happy number.

It is not a de Polignac number, because 223424223 - 25 = 223424191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223424193 and 223424202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223424213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108178 + ... + 110223.

It is an arithmetic number, because the mean of its divisors is an integer number (20966592).

Almost surely, 2223424223 is an apocalyptic number.

223424223 is a deficient number, since it is larger than the sum of its proper divisors (112041249).

223424223 is a wasteful number, since it uses less digits than its factorization.

223424223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218446.

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

The square root of 223424223 is about 14947.3818108724. The cubic root of 223424223 is about 606.7969913162.

Adding to 223424223 its reverse (322424322), we get a palindrome (545848545).

Subtracting 223424223 from its reverse (322424322), we obtain a palindrome (99000099).

It can be divided in two parts, 22342 and 4223, that added together give a triangular number (26565 = T230).

The spelling of 223424223 in words is "two hundred twenty-three million, four hundred twenty-four thousand, two hundred twenty-three".

Divisors: 1 3 11 31 33 93 341 1023 218401 655203 2402411 6770431 7207233 20311293 74474741 223424223