223231313212 has 24 divisors (see below), whose sum is σ = 392443514960. Its totient is φ = 111104801280.

The previous prime is 223231313167. The next prime is 223231313251. The reversal of 223231313212 is 212313132322.

It is a super-3 number, since 3×223231313212³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4814323 + ... + 4860469.

Almost surely, 2^223231313212 is an apocalyptic number.

It is an amenable number.

223231313212 is a deficient number, since it is larger than the sum of its proper divisors (169212201748).

223231313212 is a wasteful number, since it uses less digits than its factorization.

223231313212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51661 (or 51659 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

Adding to 223231313212 its reverse (212313132322), we get a palindrome (435544445534).

The spelling of 223231313212 in words is "two hundred twenty-three billion, two hundred thirty-one million, three hundred thirteen thousand, two hundred twelve".