223403311212 has 96 divisors (see below), whose sum is σ = 547297357824. Its totient is φ = 70791336000.

The previous prime is 223403311211. The next prime is 223403311349. The reversal of 223403311212 is 212113304322.

It is not an unprimeable number, because it can be changed into a prime (223403311211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39530587 + ... + 39536237.

It is an arithmetic number, because the mean of its divisors is an integer number (5701014144).

Almost surely, 2^223403311212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223403311212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273648678912).

223403311212 is an abundant number, since it is smaller than the sum of its proper divisors (323894046612).

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

223403311212 is a wasteful number, since it uses less digits than its factorization.

223403311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6539 (or 6537 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 223403311212 its reverse (212113304322), we get a palindrome (435516615534).

The spelling of 223403311212 in words is "two hundred twenty-three billion, four hundred three million, three hundred eleven thousand, two hundred twelve".