223323230440 has 32 divisors (see below), whose sum is σ = 502492745160. Its totient is φ = 89326540800.

The previous prime is 223323230369. The next prime is 223323230453. The reversal of 223323230440 is 44032323322.

It can be written as a sum of positive squares in 4 ways, for example, as 169515005284 + 53808225156 = 411722^2 + 231966^2 .

It is a junction number, because it is equal to n+sod(n) for n = 223323230399 and 223323230408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1673380 + ... + 1801900.

Almost surely, 2^223323230440 is an apocalyptic number.

223323230440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223323230440 is an abundant number, since it is smaller than the sum of its proper divisors (279169514720).

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

223323230440 is a wasteful number, since it uses less digits than its factorization.

223323230440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171973 (or 171969 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 223323230440 its reverse (44032323322), we get a palindrome (267355553762).

The spelling of 223323230440 in words is "two hundred twenty-three billion, three hundred twenty-three million, two hundred thirty thousand, four hundred forty".