1323143303 has 4 divisors (see below), whose sum is σ = 1400975280. Its totient is φ = 1245311328.

The previous prime is 1323143293. The next prime is 1323143317. The reversal of 1323143303 is 3033413231.

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 1323143303 - 2²² = 1318948999 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 (1323143383) 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, 38915963 + ... + 38915996.

It is an arithmetic number, because the mean of its divisors is an integer number (350243820).

Almost surely, 2^1323143303 is an apocalyptic number.

1323143303 is a deficient number, since it is larger than the sum of its proper divisors (77831977).

1323143303 is an equidigital number, since it uses as much as digits as its factorization.

1323143303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77831976.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 1323143303 is about 36375.0368109779. The cubic root of 1323143303 is about 1097.8313479694.

Adding to 1323143303 its reverse (3033413231), we get a palindrome (4356556534).

The spelling of 1323143303 in words is "one billion, three hundred twenty-three million, one hundred forty-three thousand, three hundred three".