223504123 has 4 divisors (see below), whose sum is σ = 224431768. Its totient is φ = 222576480.

The previous prime is 223504121. The next prime is 223504139. The reversal of 223504123 is 321405322.

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 223504123 - 2¹ = 223504121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223504094 and 223504103.

It is not an unprimeable number, because it can be changed into a prime (223504121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463461 + ... + 463942.

It is an arithmetic number, because the mean of its divisors is an integer number (56107942).

Almost surely, 2^223504123 is an apocalyptic number.

223504123 is a deficient number, since it is larger than the sum of its proper divisors (927645).

223504123 is an equidigital number, since it uses as much as digits as its factorization.

223504123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927644.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 223504123 is about 14950.0542808379. The cubic root of 223504123 is about 606.8693160633.

Adding to 223504123 its reverse (321405322), we get a palindrome (544909445).

The spelling of 223504123 in words is "two hundred twenty-three million, five hundred four thousand, one hundred twenty-three".