223323505 has 4 divisors (see below), whose sum is σ = 267988212. Its totient is φ = 178658800.

The previous prime is 223323493. The next prime is 223323533. The reversal of 223323505 is 505323322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31888609 + 191434896 = 5647^2 + 13836^2 .

It is not a de Polignac number, because 223323505 - 2¹¹ = 223321457 is a prime.

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 223323505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22332346 + ... + 22332355.

It is an arithmetic number, because the mean of its divisors is an integer number (66997053).

Almost surely, 2^223323505 is an apocalyptic number.

It is an amenable number.

223323505 is a deficient number, since it is larger than the sum of its proper divisors (44664707).

223323505 is an equidigital number, since it uses as much as digits as its factorization.

223323505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44664706.

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 223323505 is about 14944.0123460870. The cubic root of 223323505 is about 606.7057977349.

Adding to 223323505 its reverse (505323322), we get a palindrome (728646827).

The spelling of 223323505 in words is "two hundred twenty-three million, three hundred twenty-three thousand, five hundred five".