143013213 has 18 divisors (see below), whose sum is σ = 240301854. Its totient is φ = 81721584.

The previous prime is 143013203. The next prime is 143013223. The reversal of 143013213 is 312310341.

It is an interprime number because it is at equal distance from previous prime (143013203) and next prime (143013223).

It can be written as a sum of positive squares in only one way, i.e., 108930969 + 34082244 = 10437^2 + 5838^2 .

It is a de Polignac number, because none of the positive numbers 2^k-143013213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143013203) 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 17 ways as a sum of consecutive naturals, for example, 161706 + ... + 162587.

It is an arithmetic number, because the mean of its divisors is an integer number (13350103).

Almost surely, 2^143013213 is an apocalyptic number.

It is an amenable number.

143013213 is a deficient number, since it is larger than the sum of its proper divisors (97288641).

143013213 is a wasteful number, since it uses less digits than its factorization.

143013213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324313 (or 324303 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 143013213 is about 11958.8131936242. The cubic root of 143013213 is about 522.9482587461.

Adding to 143013213 its reverse (312310341), we get a palindrome (455323554).

The spelling of 143013213 in words is "one hundred forty-three million, thirteen thousand, two hundred thirteen".