1123011312 has 40 divisors (see below), whose sum is σ = 3001154640. Its totient is φ = 361428480.

The previous prime is 1123011299. The next prime is 1123011319. The reversal of 1123011312 is 2131103211.

It is a happy number.

It is a super-2 number, since 2×1123011312² = 2522308813759922688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123011291 and 1123011300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123011319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401989 + ... + 404772.

It is an arithmetic number, because the mean of its divisors is an integer number (75028866).

Almost surely, 2^1123011312 is an apocalyptic number.

1123011312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123011312 is an abundant number, since it is smaller than the sum of its proper divisors (1878143328).

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

1123011312 is a wasteful number, since it uses less digits than its factorization.

1123011312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806801 (or 806795 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1123011312 is about 33511.3609392397. The cubic root of 1123011312 is about 1039.4287148429.

Adding to 1123011312 its reverse (2131103211), we get a palindrome (3254114523).

The spelling of 1123011312 in words is "one billion, one hundred twenty-three million, eleven thousand, three hundred twelve".