1323204143 has 4 divisors (see below), whose sum is σ = 1324057728. Its totient is φ = 1322350560.

The previous prime is 1323204119. The next prime is 1323204221. The reversal of 1323204143 is 3414023231.

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

It is a cyclic number.

It is not a de Polignac number, because 1323204143 - 2²⁰ = 1322155567 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 (1323294143) 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, 424463 + ... + 427568.

It is an arithmetic number, because the mean of its divisors is an integer number (331014432).

Almost surely, 2^1323204143 is an apocalyptic number.

1323204143 is a deficient number, since it is larger than the sum of its proper divisors (853585).

1323204143 is an equidigital number, since it uses as much as digits as its factorization.

1323204143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853584.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1323204143 is about 36375.8730891782. The cubic root of 1323204143 is about 1097.8481743241.

Adding to 1323204143 its reverse (3414023231), we get a palindrome (4737227374).

The spelling of 1323204143 in words is "one billion, three hundred twenty-three million, two hundred four thousand, one hundred forty-three".