223721793 has 12 divisors (see below), whose sum is σ = 323310208. Its totient is φ = 149075640.

The previous prime is 223721791. The next prime is 223721821. The reversal of 223721793 is 397127322.

223721793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 223721793 - 2¹ = 223721791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223721791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19128 + ... + 28518.

Almost surely, 2^223721793 is an apocalyptic number.

It is an amenable number.

223721793 is a deficient number, since it is larger than the sum of its proper divisors (99588415).

223721793 is a wasteful number, since it uses less digits than its factorization.

223721793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12044 (or 12041 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 223721793 is about 14957.3324159089. The cubic root of 223721793 is about 607.0662615490.

The spelling of 223721793 in words is "two hundred twenty-three million, seven hundred twenty-one thousand, seven hundred ninety-three".