223656923 has 16 divisors (see below), whose sum is σ = 274560000. Its totient is φ = 181610856.

The previous prime is 223656919. The next prime is 223656929. The reversal of 223656923 is 329656322.

It is a happy number.

It is not a de Polignac number, because 223656923 - 2² = 223656919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223656929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10643 + ... + 23676.

It is an arithmetic number, because the mean of its divisors is an integer number (17160000).

Almost surely, 2^223656923 is an apocalyptic number.

223656923 is a deficient number, since it is larger than the sum of its proper divisors (50903077).

223656923 is an equidigital number, since it uses as much as digits as its factorization.

223656923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34359 (or 34345 counting only the distinct ones).

The product of its digits is 116640, while the sum is 38.

The square root of 223656923 is about 14955.1637570439. The cubic root of 223656923 is about 607.0075812350.

The spelling of 223656923 in words is "two hundred twenty-three million, six hundred fifty-six thousand, nine hundred twenty-three".