143530213 has 2 divisors, whose sum is σ = 143530214. Its totient is φ = 143530212.

The previous prime is 143530187. The next prime is 143530229. The reversal of 143530213 is 312035341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83576164 + 59954049 = 9142^2 + 7743^2 .

It is an emirp because it is prime and its reverse (312035341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143530213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143530253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71765106 + 71765107.

It is an arithmetic number, because the mean of its divisors is an integer number (71765107).

Almost surely, 2^143530213 is an apocalyptic number.

It is an amenable number.

143530213 is a deficient number, since it is larger than the sum of its proper divisors (1).

143530213 is an equidigital number, since it uses as much as digits as its factorization.

143530213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 143530213 is about 11980.4095505955. The cubic root of 143530213 is about 523.5776623827.

Adding to 143530213 its reverse (312035341), we get a palindrome (455565554).

The spelling of 143530213 in words is "one hundred forty-three million, five hundred thirty thousand, two hundred thirteen".