1113232320 has 336 divisors, whose sum is σ = 4071445248. Its totient is φ = 278691840.

The previous prime is 1113232297. The next prime is 1113232327. The reversal of 1113232320 is 232323111.

1113232320 is a `hidden beast` number, since 1 + 113 + 232 + 320 = 666.

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 = 1113232293 and 1113232302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113232327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3303192 + ... + 3303528.

Almost surely, 2^1113232320 is an apocalyptic number.

1113232320 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 1113232320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2035722624).

1113232320 is an abundant number, since it is smaller than the sum of its proper divisors (2958212928).

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

1113232320 is a wasteful number, since it uses less digits than its factorization.

1113232320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 415 counting only the distinct ones).

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

The square root of 1113232320 is about 33365.1362952409. The cubic root of 1113232320 is about 1036.4028585844.

Adding to 1113232320 its reverse (232323111), we get a palindrome (1345555431).

The spelling of 1113232320 in words is "one billion, one hundred thirteen million, two hundred thirty-two thousand, three hundred twenty".