223143312 has 40 divisors (see below), whose sum is σ = 658805056. Its totient is φ = 63755136.

The previous prime is 223143311. The next prime is 223143329. The reversal of 223143312 is 213341322.

It is a super-3 number, since 3×223143312³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (223143311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331723 + ... + 332394.

Almost surely, 2^223143312 is an apocalyptic number.

It is an amenable number.

223143312 is an abundant number, since it is smaller than the sum of its proper divisors (435661744).

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

223143312 is a wasteful number, since it uses less digits than its factorization.

223143312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664135 (or 664129 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 223143312 is about 14937.9821930541. The cubic root of 223143312 is about 606.5425762916.

Adding to 223143312 its reverse (213341322), we get a palindrome (436484634).

The spelling of 223143312 in words is "two hundred twenty-three million, one hundred forty-three thousand, three hundred twelve".