1123146112 has 32 divisors (see below), whose sum is σ = 2440931400. Its totient is φ = 510520320.

The previous prime is 1123146109. The next prime is 1123146113. The reversal of 1123146112 is 2116413211.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1123146112² = 2522914377801433088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123146113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397437 + ... + 400252.

Almost surely, 2^1123146112 is an apocalyptic number.

It is an amenable number.

1123146112 is an abundant number, since it is smaller than the sum of its proper divisors (1317785288).

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

1123146112 is an equidigital number, since it uses as much as digits as its factorization.

1123146112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797714 (or 797702 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

The square root of 1123146112 is about 33513.3721371037. The cubic root of 1123146112 is about 1039.4703022497.

Adding to 1123146112 its reverse (2116413211), we get a palindrome (3239559323).

The spelling of 1123146112 in words is "one billion, one hundred twenty-three million, one hundred forty-six thousand, one hundred twelve".