11031323120 has 80 divisors (see below), whose sum is σ = 27336875328. Its totient is φ = 4125388800.

The previous prime is 11031323113. The next prime is 11031323203. The reversal of 11031323120 is 2132313011.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178502 + ... + 232218.

Almost surely, 2^11031323120 is an apocalyptic number.

11031323120 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 11031323120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13668437664).

11031323120 is an abundant number, since it is smaller than the sum of its proper divisors (16305552208).

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

11031323120 is a wasteful number, since it uses less digits than its factorization.

11031323120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53898 (or 53892 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 11031323120 its reverse (2132313011), we get a palindrome (13163636131).

The spelling of 11031323120 in words is "eleven billion, thirty-one million, three hundred twenty-three thousand, one hundred twenty".