223018 has 4 divisors (see below), whose sum is σ = 334530. Its totient is φ = 111508.

The previous prime is 223009. The next prime is 223019. The reversal of 223018 is 810322.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 214369 + 8649 = 463^2 + 93^2 .

It is a d-powerful number, because it can be written as 2⁷ + 2¹⁷ + 0 + 3¹⁰ + 1 + 8⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 222992 and 223010.

It is not an unprimeable number, because it can be changed into a prime (223019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55753 + ... + 55756.

2²²³⁰¹⁸ is an apocalyptic number.

223018 is a deficient number, since it is larger than the sum of its proper divisors (111512).

223018 is a wasteful number, since it uses less digits than its factorization.

223018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111511.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 223018 is about 472.2478162999. The cubic root of 223018 is about 60.6429015048.

The spelling of 223018 in words is "two hundred twenty-three thousand, eighteen".