1123313020 has 48 divisors (see below), whose sum is σ = 2387685888. Its totient is φ = 443888640.

The previous prime is 1123312997. The next prime is 1123313027. The reversal of 1123313020 is 203133211.

It is a junction number, because it is equal to n+sod(n) for n = 1123312985 and 1123313003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123313027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 598804 + ... + 600676.

It is an arithmetic number, because the mean of its divisors is an integer number (49743456).

Almost surely, 2^1123313020 is an apocalyptic number.

1123313020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123313020 is an abundant number, since it is smaller than the sum of its proper divisors (1264372868).

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

1123313020 is a wasteful number, since it uses less digits than its factorization.

1123313020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230 (or 2228 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1123313020 is about 33515.8622147782. The cubic root of 1123313020 is about 1039.5217907467.

Adding to 1123313020 its reverse (203133211), we get a palindrome (1326446231).

The spelling of 1123313020 in words is "one billion, one hundred twenty-three million, three hundred thirteen thousand, twenty".