143031223 has 4 divisors (see below), whose sum is σ = 143629920. Its totient is φ = 142432528.

The previous prime is 143031211. The next prime is 143031257. The reversal of 143031223 is 322130341.

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

It is not a de Polignac number, because 143031223 - 2¹⁷ = 142900151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143031223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143031283) 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, 298990 + ... + 299467.

It is an arithmetic number, because the mean of its divisors is an integer number (35907480).

Almost surely, 2^143031223 is an apocalyptic number.

143031223 is a deficient number, since it is larger than the sum of its proper divisors (598697).

143031223 is an equidigital number, since it uses as much as digits as its factorization.

143031223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598696.

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

The square root of 143031223 is about 11959.5661710616. The cubic root of 143031223 is about 522.9702098712.

Adding to 143031223 its reverse (322130341), we get a palindrome (465161564).

The spelling of 143031223 in words is "one hundred forty-three million, thirty-one thousand, two hundred twenty-three".