223809473212 has 24 divisors (see below), whose sum is σ = 421879474800. Its totient is φ = 103275937536.

The previous prime is 223809473201. The next prime is 223809473213. The reversal of 223809473212 is 212374908322.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223809473213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169162 + ... + 690097.

It is an arithmetic number, because the mean of its divisors is an integer number (17578311450).

Almost surely, 2^223809473212 is an apocalyptic number.

It is an amenable number.

223809473212 is a deficient number, since it is larger than the sum of its proper divisors (198070001588).

223809473212 is a wasteful number, since it uses less digits than its factorization.

223809473212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864285 (or 864283 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 223809473212 in words is "two hundred twenty-three billion, eight hundred nine million, four hundred seventy-three thousand, two hundred twelve".