11321234320 has 240 divisors, whose sum is σ = 31018483440. Its totient is φ = 3826155520.

The previous prime is 11321234299. The next prime is 11321234387. The reversal of 11321234320 is 2343212311.

It can be written as a sum of positive squares in 8 ways, for example, as 1362791056 + 9958443264 = 36916^2 + 99792^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 11321234291 and 11321234300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14645454 + ... + 14646226.

It is an arithmetic number, because the mean of its divisors is an integer number (129243681).

Almost surely, 2^11321234320 is an apocalyptic number.

11321234320 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 11321234320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15509241720).

11321234320 is an abundant number, since it is smaller than the sum of its proper divisors (19697249120).

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

11321234320 is a wasteful number, since it uses less digits than its factorization.

11321234320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 11321234320 its reverse (2343212311), we get a palindrome (13664446631).

The spelling of 11321234320 in words is "eleven billion, three hundred twenty-one million, two hundred thirty-four thousand, three hundred twenty".