143220133 has 4 divisors (see below), whose sum is σ = 163680160. Its totient is φ = 122760108.

The previous prime is 143220109. The next prime is 143220191. The reversal of 143220133 is 331022341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 331022341 = 13 ⋅25463257.

It is a cyclic number.

It is not a de Polignac number, because 143220133 - 2²¹ = 141122981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143220133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143220533) 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 3 ways as a sum of consecutive naturals, for example, 10230003 + ... + 10230016.

It is an arithmetic number, because the mean of its divisors is an integer number (40920040).

Almost surely, 2^143220133 is an apocalyptic number.

It is an amenable number.

143220133 is a deficient number, since it is larger than the sum of its proper divisors (20460027).

143220133 is an equidigital number, since it uses as much as digits as its factorization.

143220133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20460026.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 143220133 is about 11967.4614267187. The cubic root of 143220133 is about 523.2003480598.

Adding to 143220133 its reverse (331022341), we get a palindrome (474242474).

The spelling of 143220133 in words is "one hundred forty-three million, two hundred twenty thousand, one hundred thirty-three".