1123011320 has 64 divisors (see below), whose sum is σ = 2604903840. Its totient is φ = 435456000.

The previous prime is 1123011319. The next prime is 1123011371. The reversal of 1123011320 is 231103211.

It is a super-2 number, since 2×1123011320² = 2522308849696284800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123011295 and 1123011304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265220 + ... + 269420.

Almost surely, 2^1123011320 is an apocalyptic number.

1123011320 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 1123011320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1302451920).

1123011320 is an abundant number, since it is smaller than the sum of its proper divisors (1481892520).

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

1123011320 is a wasteful number, since it uses less digits than its factorization.

1123011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416 (or 4412 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1123011320 is about 33511.3610586022. The cubic root of 1123011320 is about 1039.4287173111.

Adding to 1123011320 its reverse (231103211), we get a palindrome (1354114531).

The spelling of 1123011320 in words is "one billion, one hundred twenty-three million, eleven thousand, three hundred twenty".