143534213 has 4 divisors (see below), whose sum is σ = 151977420. Its totient is φ = 135091008.

The previous prime is 143534203. The next prime is 143534219. The reversal of 143534213 is 312435341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90288004 + 53246209 = 9502^2 + 7297^2 .

It is a cyclic number.

It is not a de Polignac number, because 143534213 - 2¹⁸ = 143272069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143534219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4221578 + ... + 4221611.

It is an arithmetic number, because the mean of its divisors is an integer number (37994355).

Almost surely, 2^143534213 is an apocalyptic number.

It is an amenable number.

143534213 is a deficient number, since it is larger than the sum of its proper divisors (8443207).

143534213 is an equidigital number, since it uses as much as digits as its factorization.

143534213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443206.

The product of its digits is 4320, while the sum is 26.

The square root of 143534213 is about 11980.5764886336. The cubic root of 143534213 is about 523.5825261466.

Adding to 143534213 its reverse (312435341), we get a palindrome (455969554).

The spelling of 143534213 in words is "one hundred forty-three million, five hundred thirty-four thousand, two hundred thirteen".