1128231112 has 128 divisors (see below), whose sum is σ = 2429844480. Its totient is φ = 488448000.

The previous prime is 1128231067. The next prime is 1128231113. The reversal of 1128231112 is 2111328211.

It is not an unprimeable number, because it can be changed into a prime (1128231113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10544163 + ... + 10544269.

It is an arithmetic number, because the mean of its divisors is an integer number (18983160).

Almost surely, 2^1128231112 is an apocalyptic number.

It is an amenable number.

1128231112 is an abundant number, since it is smaller than the sum of its proper divisors (1301613368).

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

1128231112 is a wasteful number, since it uses less digits than its factorization.

1128231112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 259 counting only the distinct ones).

The product of its digits is 192, while the sum is 22.

The square root of 1128231112 is about 33589.1517011073. The cubic root of 1128231112 is about 1041.0366610969.

Adding to 1128231112 its reverse (2111328211), we get a palindrome (3239559323).

The spelling of 1128231112 in words is "one billion, one hundred twenty-eight million, two hundred thirty-one thousand, one hundred twelve".