233223505 has 4 divisors (see below), whose sum is σ = 279868212. Its totient is φ = 186578800.

The previous prime is 233223503. The next prime is 233223533. The reversal of 233223505 is 505322332.

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 159744321 + 73479184 = 12639^2 + 8572^2 .

It is not a de Polignac number, because 233223505 - 2¹ = 233223503 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 233223505.

It is not an unprimeable number, because it can be changed into a prime (233223503) 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, 23322346 + ... + 23322355.

It is an arithmetic number, because the mean of its divisors is an integer number (69967053).

Almost surely, 2^233223505 is an apocalyptic number.

It is an amenable number.

233223505 is a deficient number, since it is larger than the sum of its proper divisors (46644707).

233223505 is an equidigital number, since it uses as much as digits as its factorization.

233223505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46644706.

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

The square root of 233223505 is about 15271.6569173093. The cubic root of 233223505 is about 615.5416428146.

Adding to 233223505 its reverse (505322332), we get a palindrome (738545837).

The spelling of 233223505 in words is "two hundred thirty-three million, two hundred twenty-three thousand, five hundred five".