143135213 has 16 divisors (see below), whose sum is σ = 160102320. Its totient is φ = 127056384.

The previous prime is 143135177. The next prime is 143135221. The reversal of 143135213 is 312531341.

It can be written as a sum of positive squares in 8 ways, for example, as 77492809 + 65642404 = 8803^2 + 8102^2 .

It is not a de Polignac number, because 143135213 - 2⁶ = 143135149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143135263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117395 + ... + 118607.

It is an arithmetic number, because the mean of its divisors is an integer number (10006395).

Almost surely, 2^143135213 is an apocalyptic number.

143135213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

143135213 is a deficient number, since it is larger than the sum of its proper divisors (16967107).

143135213 is a wasteful number, since it uses less digits than its factorization.

143135213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568.

The product of its digits is 1080, while the sum is 23.

The square root of 143135213 is about 11963.9129468581. The cubic root of 143135213 is about 523.0969199618.

Adding to 143135213 its reverse (312531341), we get a palindrome (455666554).

The spelling of 143135213 in words is "one hundred forty-three million, one hundred thirty-five thousand, two hundred thirteen".