1323111120 has 120 divisors (see below), whose sum is σ = 4216542624. Its totient is φ = 343208448.

The previous prime is 1323111103. The next prime is 1323111131. The reversal of 1323111120 is 211113231.

It is a happy number.

1323111120 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1323111120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 326547 + ... + 330573.

Almost surely, 2^1323111120 is an apocalyptic number.

1323111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2108271312).

1323111120 is an abundant number, since it is smaller than the sum of its proper divisors (2893431504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1323111120 is a wasteful number, since it uses less digits than its factorization.

1323111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4117 (or 4074 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1323111120 is about 36374.5944307287. The cubic root of 1323111120 is about 1097.8224469953.

Adding to 1323111120 its reverse (211113231), we get a palindrome (1534224351).

It can be divided in two parts, 1323111 and 120, that added together give a palindrome (1323231).

The spelling of 1323111120 in words is "one billion, three hundred twenty-three million, one hundred eleven thousand, one hundred twenty".