1123213320 has 96 divisors (see below), whose sum is σ = 3735388800. Its totient is φ = 292553856.

The previous prime is 1123213319. The next prime is 1123213361. The reversal of 1123213320 is 233123211.

1123213320 is a `hidden beast` number, since 1 + 12 + 321 + 332 + 0 = 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 = 1123213293 and 1123213302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20800 + ... + 51759.

It is an arithmetic number, because the mean of its divisors is an integer number (38910300).

Almost surely, 2^1123213320 is an apocalyptic number.

1123213320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123213320 is an abundant number, since it is smaller than the sum of its proper divisors (2612175480).

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

1123213320 is a wasteful number, since it uses less digits than its factorization.

1123213320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72619 (or 72612 counting only the distinct ones).

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

The square root of 1123213320 is about 33514.3748263338. The cubic root of 1123213320 is about 1039.4910354758.

Adding to 1123213320 its reverse (233123211), we get a palindrome (1356336531).

The spelling of 1123213320 in words is "one billion, one hundred twenty-three million, two hundred thirteen thousand, three hundred twenty".