223212143 has 16 divisors (see below), whose sum is σ = 282216960. Its totient is φ = 171477600.

The previous prime is 223212139. The next prime is 223212151. The reversal of 223212143 is 341212322.

It is not a de Polignac number, because 223212143 - 2² = 223212139 is a prime.

It is a super-3 number, since 3×223212143³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223212103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14948 + ... + 25881.

It is an arithmetic number, because the mean of its divisors is an integer number (17638560).

Almost surely, 2^223212143 is an apocalyptic number.

223212143 is a deficient number, since it is larger than the sum of its proper divisors (59004817).

223212143 is a wasteful number, since it uses less digits than its factorization.

223212143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40918.

The product of its digits is 576, while the sum is 20.

The square root of 223212143 is about 14940.2859075722. The cubic root of 223212143 is about 606.6049347818.

Adding to 223212143 its reverse (341212322), we get a palindrome (564424465).

The spelling of 223212143 in words is "two hundred twenty-three million, two hundred twelve thousand, one hundred forty-three".