143232213 has 16 divisors (see below), whose sum is σ = 193311360. Its totient is φ = 94326336.

The previous prime is 143232211. The next prime is 143232227. The reversal of 143232213 is 312232341.

It is not a de Polignac number, because 143232213 - 2¹ = 143232211 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 143232213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143232211) 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, 211231 + ... + 211907.

It is an arithmetic number, because the mean of its divisors is an integer number (12081960).

Almost surely, 2^143232213 is an apocalyptic number.

It is an amenable number.

143232213 is a deficient number, since it is larger than the sum of its proper divisors (50079147).

143232213 is a wasteful number, since it uses less digits than its factorization.

143232213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436.

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

The square root of 143232213 is about 11967.9661179333. The cubic root of 143232213 is about 523.2150575432.

Adding to 143232213 its reverse (312232341), we get a palindrome (455464554).

The spelling of 143232213 in words is "one hundred forty-three million, two hundred thirty-two thousand, two hundred thirteen".