1123022320 has 40 divisors (see below), whose sum is σ = 2984032224. Its totient is φ = 385036032.

The previous prime is 1123022297. The next prime is 1123022339. The reversal of 1123022320 is 232203211.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1123022320² = 2522358262436364800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1123022294 and 1123022303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1002139 + ... + 1003258.

Almost surely, 2^1123022320 is an apocalyptic number.

1123022320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123022320 is an abundant number, since it is smaller than the sum of its proper divisors (1861009904).

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

1123022320 is a wasteful number, since it uses less digits than its factorization.

1123022320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005417 (or 2005411 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1123022320 is about 33511.5251816446. The cubic root of 1123022320 is about 1039.4321110669.

Adding to 1123022320 its reverse (232203211), we get a palindrome (1355225531).

The spelling of 1123022320 in words is "one billion, one hundred twenty-three million, twenty-two thousand, three hundred twenty".