1323113121 has 24 divisors (see below), whose sum is σ = 2129272704. Its totient is φ = 784822560.

The previous prime is 1323113107. The next prime is 1323113131. The reversal of 1323113121 is 1213113231.

It is not a de Polignac number, because 1323113121 - 2¹¹ = 1323111073 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1323113094 and 1323113103.

It is not an unprimeable number, because it can be changed into a prime (1323113131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137526 + ... + 146831.

It is an arithmetic number, because the mean of its divisors is an integer number (88719696).

Almost surely, 2^1323113121 is an apocalyptic number.

1323113121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1323113121 is a deficient number, since it is larger than the sum of its proper divisors (806159583).

1323113121 is a wasteful number, since it uses less digits than its factorization.

1323113121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284421 (or 284418 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1323113121 is about 36374.6219361796. The cubic root of 1323113121 is about 1097.8230004237.

Adding to 1323113121 its reverse (1213113231), we get a palindrome (2536226352).

The spelling of 1323113121 in words is "one billion, three hundred twenty-three million, one hundred thirteen thousand, one hundred twenty-one".