223013123 has 4 divisors (see below), whose sum is σ = 236131560. Its totient is φ = 209894688.

The previous prime is 223013117. The next prime is 223013137. The reversal of 223013123 is 321310322.

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 223013123 - 2⁴ = 223013107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 13118419 = 223013123 / (2 + 2 + 3 + 0 + 1 + 3 + 1 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223013113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6559193 + ... + 6559226.

It is an arithmetic number, because the mean of its divisors is an integer number (59032890).

Almost surely, 2^223013123 is an apocalyptic number.

223013123 is a deficient number, since it is larger than the sum of its proper divisors (13118437).

223013123 is a wasteful number, since it uses less digits than its factorization.

223013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13118436.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 223013123 is about 14933.6239071432. The cubic root of 223013123 is about 606.4245945146.

Adding to 223013123 its reverse (321310322), we get a palindrome (544323445).

The spelling of 223013123 in words is "two hundred twenty-three million, thirteen thousand, one hundred twenty-three".