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223023423 = 3710620163
BaseRepresentation
bin11010100101100…
…01000100111111
3120112122202121210
431102301010333
5424043222143
634044055503
75345445030
oct1522610477
9515582553
10223023423
11104988887
1262834593
133728892c
1421896a87
15148a6033
hexd4b113f

223023423 has 8 divisors (see below), whose sum is σ = 339845248. Its totient is φ = 127441944.

The previous prime is 223023421. The next prime is 223023431. The reversal of 223023423 is 324320322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 223023423 - 21 = 223023421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10620163 = 223023423 / (2 + 2 + 3 + 0 + 2 + 3 + 4 + 2 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223023423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223023421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5310061 + ... + 5310102.

It is an arithmetic number, because the mean of its divisors is an integer number (42480656).

Almost surely, 2223023423 is an apocalyptic number.

223023423 is a deficient number, since it is larger than the sum of its proper divisors (116821825).

223023423 is a wasteful number, since it uses less digits than its factorization.

223023423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10620173.

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

The square root of 223023423 is about 14933.9687625226. The cubic root of 223023423 is about 606.4339304034.

Adding to 223023423 its reverse (324320322), we get a palindrome (547343745).

It can be divided in two parts, 223023 and 423, that added together give a triangular number (223446 = T668).

The spelling of 223023423 in words is "two hundred twenty-three million, twenty-three thousand, four hundred twenty-three".

Divisors: 1 3 7 21 10620163 31860489 74341141 223023423