223212311000 has 64 divisors (see below), whose sum is σ = 596933513280. Its totient is φ = 76529932800.

The previous prime is 223212310967. The next prime is 223212311017. The reversal of 223212311000 is 113212322.

It is a super-3 number, since 3×223212311000³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223212311000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15936737 + ... + 15950736.

It is an arithmetic number, because the mean of its divisors is an integer number (9327086145).

Almost surely, 2^223212311000 is an apocalyptic number.

223212311000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223212311000 is an abundant number, since it is smaller than the sum of its proper divisors (373721202280).

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

223212311000 is a wasteful number, since it uses less digits than its factorization.

223212311000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31887501 (or 31887487 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 223212311000 its reverse (113212322), we get a palindrome (223325523322).

The spelling of 223212311000 in words is "two hundred twenty-three billion, two hundred twelve million, three hundred eleven thousand".