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223320423 = 3116364007
BaseRepresentation
bin11010100111110…
…01100101100111
3120120012212000210
431103321211213
5424132223143
634054310503
75351122644
oct1523714547
9516185023
10223320423
11105070a37
1262958433
1337360b81
1421932dcb
1514914033
hexd4f9967

223320423 has 8 divisors (see below), whose sum is σ = 298021248. Its totient is φ = 148749944.

The previous prime is 223320421. The next prime is 223320437. The reversal of 223320423 is 324023322.

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 223320423 - 21 = 223320421 is a prime.

It is a super-2 number, since 2×2233204232 = 99744022657797858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223320423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223320421) 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 7 ways as a sum of consecutive naturals, for example, 28515 + ... + 35492.

It is an arithmetic number, because the mean of its divisors is an integer number (37252656).

Almost surely, 2223320423 is an apocalyptic number.

223320423 is a deficient number, since it is larger than the sum of its proper divisors (74700825).

223320423 is a wasteful number, since it uses less digits than its factorization.

223320423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65173.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 223320423 is about 14943.9092275080. The cubic root of 223320423 is about 606.7030067526.

Adding to 223320423 its reverse (324023322), we get a palindrome (547343745).

The spelling of 223320423 in words is "two hundred twenty-three million, three hundred twenty thousand, four hundred twenty-three".

Divisors: 1 3 1163 3489 64007 192021 74440141 223320423