1323133111 has 4 divisors (see below), whose sum is σ = 1327130824. Its totient is φ = 1319135400.

The previous prime is 1323133093. The next prime is 1323133183. The reversal of 1323133111 is 1113313231.

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 1323133111 - 2¹⁷ = 1323002039 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 (1323133211) 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, 1998360 + ... + 1999021.

It is an arithmetic number, because the mean of its divisors is an integer number (331782706).

Almost surely, 2^1323133111 is an apocalyptic number.

1323133111 is a deficient number, since it is larger than the sum of its proper divisors (3997713).

1323133111 is an equidigital number, since it uses as much as digits as its factorization.

1323133111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3997712.

The product of its digits is 162, while the sum is 19.

The square root of 1323133111 is about 36374.8967146300. The cubic root of 1323133111 is about 1097.8285291450.

Adding to 1323133111 its reverse (1113313231), we get a palindrome (2436446342).

It can be divided in two parts, 132313 and 3111, that added together give a square (135424 = 368²).

The spelling of 1323133111 in words is "one billion, three hundred twenty-three million, one hundred thirty-three thousand, one hundred eleven".