11123230320 has 120 divisors (see below), whose sum is σ = 37398896496. Its totient is φ = 2962750464.

The previous prime is 11123230297. The next prime is 11123230331. The reversal of 11123230320 is 2303232111.

11123230320 is a `hidden beast` number, since 1 + 112 + 3 + 230 + 320 = 666.

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 (18).

It is a junction number, because it is equal to n+sod(n) for n = 11123230293 and 11123230302.

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, 644524 + ... + 661556.

Almost surely, 2^11123230320 is an apocalyptic number.

11123230320 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 11123230320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18699448248).

11123230320 is an abundant number, since it is smaller than the sum of its proper divisors (26275666176).

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

11123230320 is a wasteful number, since it uses less digits than its factorization.

11123230320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17959 (or 17950 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 11123230320 its reverse (2303232111), we get a palindrome (13426462431).

The spelling of 11123230320 in words is "eleven billion, one hundred twenty-three million, two hundred thirty thousand, three hundred twenty".