143223655 has 4 divisors (see below), whose sum is σ = 171868392. Its totient is φ = 114578920.

The previous prime is 143223637. The next prime is 143223659. The reversal of 143223655 is 556322341.

It is a happy number.

143223655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 143223655 - 2¹¹ = 143221607 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 (143223659) 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, 14322361 + ... + 14322370.

It is an arithmetic number, because the mean of its divisors is an integer number (42967098).

Almost surely, 2^143223655 is an apocalyptic number.

143223655 is a deficient number, since it is larger than the sum of its proper divisors (28644737).

143223655 is an equidigital number, since it uses as much as digits as its factorization.

143223655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28644736.

The product of its digits is 21600, while the sum is 31.

The square root of 143223655 is about 11967.6085748156. The cubic root of 143223655 is about 523.2046367876.

Adding to 143223655 its reverse (556322341), we get a palindrome (699545996).

The spelling of 143223655 in words is "one hundred forty-three million, two hundred twenty-three thousand, six hundred fifty-five".