223912 has 16 divisors (see below), whose sum is σ = 452340. Its totient is φ = 103296.

The previous prime is 223903. The next prime is 223919. The reversal of 223912 is 219322.

It is a happy number.

223912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 181476 + 42436 = 426^2 + 206^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 223912.

It is not an unprimeable number, because it can be changed into a prime (223919) by changing a digit.

223912 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973 + ... + 1180.

2²²³⁹¹² is an apocalyptic number.

It is an amenable number.

223912 is an abundant number, since it is smaller than the sum of its proper divisors (228428).

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

223912 is a wasteful number, since it uses less digits than its factorization.

223912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172 (or 2168 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 223912 is about 473.1934065475. The cubic root of 223912 is about 60.7238254247.

The spelling of 223912 in words is "two hundred twenty-three thousand, nine hundred twelve".