223111320 has 64 divisors (see below), whose sum is σ = 671328000. Its totient is φ = 59319168.

The previous prime is 223111313. The next prime is 223111321. The reversal of 223111320 is 23111322.

223111320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×223111320³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 223111320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223111321) 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, 40491 + ... + 45669.

It is an arithmetic number, because the mean of its divisors is an integer number (10489500).

Almost surely, 2^223111320 is an apocalyptic number.

223111320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223111320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335664000).

223111320 is an abundant number, since it is smaller than the sum of its proper divisors (448216680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223111320 is a wasteful number, since it uses less digits than its factorization.

223111320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5552 (or 5548 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 223111320 is about 14936.9113273126. The cubic root of 223111320 is about 606.5135882878.

Adding to 223111320 its reverse (23111322), we get a palindrome (246222642).

The spelling of 223111320 in words is "two hundred twenty-three million, one hundred eleven thousand, three hundred twenty".