240223 has 4 divisors (see below), whose sum is σ = 241488. Its totient is φ = 238960.

The previous prime is 240209. The next prime is 240257. The reversal of 240223 is 322042.

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

It is a cyclic number.

It is not a de Polignac number, because 240223 - 2⁹ = 239711 is a prime.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240203) 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, 283 + ... + 748.

It is an arithmetic number, because the mean of its divisors is an integer number (60372).

2²⁴⁰²²³ is an apocalyptic number.

240223 is a deficient number, since it is larger than the sum of its proper divisors (1265).

240223 is a wasteful number, since it uses less digits than its factorization.

240223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 240223 is about 490.1254941339. The cubic root of 240223 is about 62.1638917399.

Adding to 240223 its reverse (322042), we get a palindrome (562265).

It can be divided in two parts, 24022 and 3, that added together give a square (24025 = 155²).

The spelling of 240223 in words is "two hundred forty thousand, two hundred twenty-three", and thus it is an iban number.