223018349 has 4 divisors (see below), whose sum is σ = 224075520. Its totient is φ = 221961180.

The previous prime is 223018331. The next prime is 223018357. The reversal of 223018349 is 943810322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 223018349 - 2¹⁶ = 222952813 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223018319) 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, 528269 + ... + 528690.

It is an arithmetic number, because the mean of its divisors is an integer number (56018880).

Almost surely, 2^223018349 is an apocalyptic number.

It is an amenable number.

223018349 is a deficient number, since it is larger than the sum of its proper divisors (1057171).

223018349 is a wasteful number, since it uses less digits than its factorization.

223018349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057170.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 223018349 is about 14933.7988803921. The cubic root of 223018349 is about 606.4293313811.

The spelling of 223018349 in words is "two hundred twenty-three million, eighteen thousand, three hundred forty-nine".