143213233 has 2 divisors, whose sum is σ = 143213234. Its totient is φ = 143213232.

The previous prime is 143213227. The next prime is 143213251. The reversal of 143213233 is 332312341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139783329 + 3429904 = 11823^2 + 1852^2 .

It is an emirp because it is prime and its reverse (332312341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143213233 - 2⁹ = 143212721 is a prime.

It is not a weakly prime, because it can be changed into another prime (143213633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71606616 + 71606617.

It is an arithmetic number, because the mean of its divisors is an integer number (71606617).

Almost surely, 2^143213233 is an apocalyptic number.

It is an amenable number.

143213233 is a deficient number, since it is larger than the sum of its proper divisors (1).

143213233 is an equidigital number, since it uses as much as digits as its factorization.

143213233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 22.

The square root of 143213233 is about 11967.1731415569. The cubic root of 143213233 is about 523.1919457486.

Adding to 143213233 its reverse (332312341), we get a palindrome (475525574).

The spelling of 143213233 in words is "one hundred forty-three million, two hundred thirteen thousand, two hundred thirty-three".