1323111331 has 8 divisors (see below), whose sum is σ = 1338402464. Its totient is φ = 1307854080.

The previous prime is 1323111311. The next prime is 1323111337. The reversal of 1323111331 is 1331113231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1323111331 - 2⁵ = 1323111299 is a prime.

It is a super-2 number, since 2×1323111331² = 3501247188441183122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323111299 and 1323111308.

It is not an unprimeable number, because it can be changed into a prime (1323111337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74746 + ... + 90736.

It is an arithmetic number, because the mean of its divisors is an integer number (167300308).

Almost surely, 2^1323111331 is an apocalyptic number.

1323111331 is a deficient number, since it is larger than the sum of its proper divisors (15291133).

1323111331 is an equidigital number, since it uses as much as digits as its factorization.

1323111331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16941.

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

The square root of 1323111331 is about 36374.5973311046. The cubic root of 1323111331 is about 1097.8225053529.

Adding to 1323111331 its reverse (1331113231), we get a palindrome (2654224562).

The spelling of 1323111331 in words is "one billion, three hundred twenty-three million, one hundred eleven thousand, three hundred thirty-one".