223540312 has 32 divisors (see below), whose sum is σ = 439073280. Its totient is φ = 106492320.

The previous prime is 223540309. The next prime is 223540337. The reversal of 223540312 is 213045322.

223540312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 47623 + ... + 52105.

It is an arithmetic number, because the mean of its divisors is an integer number (13721040).

Almost surely, 2^223540312 is an apocalyptic number.

It is an amenable number.

223540312 is a deficient number, since it is larger than the sum of its proper divisors (215532968).

223540312 is a wasteful number, since it uses less digits than its factorization.

223540312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4783 (or 4779 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 223540312 is about 14951.2645619024. The cubic root of 223540312 is about 606.9020683427.

Adding to 223540312 its reverse (213045322), we get a palindrome (436585634).

The spelling of 223540312 in words is "two hundred twenty-three million, five hundred forty thousand, three hundred twelve".