1323203111 has 4 divisors (see below), whose sum is σ = 1392845400. Its totient is φ = 1253560824.

The previous prime is 1323203107. The next prime is 1323203113. The reversal of 1323203111 is 1113023231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1113023231 = 89 ⋅12505879.

It is a cyclic number.

It is not a de Polignac number, because 1323203111 - 2² = 1323203107 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 1323203111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323203113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34821116 + ... + 34821153.

It is an arithmetic number, because the mean of its divisors is an integer number (348211350).

Almost surely, 2^1323203111 is an apocalyptic number.

1323203111 is a deficient number, since it is larger than the sum of its proper divisors (69642289).

1323203111 is an equidigital number, since it uses as much as digits as its factorization.

1323203111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69642288.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1323203111 is about 36375.8589039489. The cubic root of 1323203111 is about 1097.8478889109.

Adding to 1323203111 its reverse (1113023231), we get a palindrome (2436226342).

The spelling of 1323203111 in words is "one billion, three hundred twenty-three million, two hundred three thousand, one hundred eleven".