1323313121 has 32 divisors (see below), whose sum is σ = 1541568000. Its totient is φ = 1125715968.

The previous prime is 1323313109. The next prime is 1323313129. The reversal of 1323313121 is 1213133231.

It is not a de Polignac number, because 1323313121 - 2²² = 1319118817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323313093 and 1323313102.

It is not an unprimeable number, because it can be changed into a prime (1323313129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1423985 + ... + 1424913.

It is an arithmetic number, because the mean of its divisors is an integer number (48174000).

Almost surely, 2^1323313121 is an apocalyptic number.

It is an amenable number.

1323313121 is a deficient number, since it is larger than the sum of its proper divisors (218254879).

1323313121 is a wasteful number, since it uses less digits than its factorization.

1323313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113.

The product of its digits is 324, while the sum is 20.

The square root of 1323313121 is about 36377.3710017643. The cubic root of 1323313121 is about 1097.8783127862.

Adding to 1323313121 its reverse (1213133231), we get a palindrome (2536446352).

The spelling of 1323313121 in words is "one billion, three hundred twenty-three million, three hundred thirteen thousand, one hundred twenty-one".