1131023112 has 16 divisors (see below), whose sum is σ = 2827557840. Its totient is φ = 377007696.

The previous prime is 1131023111. The next prime is 1131023119. The reversal of 1131023112 is 2113201311.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1131023091 and 1131023100.

It is not an unprimeable number, because it can be changed into a prime (1131023111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23562958 + ... + 23563005.

It is an arithmetic number, because the mean of its divisors is an integer number (176722365).

Almost surely, 2^1131023112 is an apocalyptic number.

1131023112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1131023112 is an abundant number, since it is smaller than the sum of its proper divisors (1696534728).

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

1131023112 is a wasteful number, since it uses less digits than its factorization.

1131023112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47125972 (or 47125968 counting only the distinct ones).

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

The square root of 1131023112 is about 33630.6870581022. The cubic root of 1131023112 is about 1041.8946945304.

Adding to 1131023112 its reverse (2113201311), we get a palindrome (3244224423).

The spelling of 1131023112 in words is "one billion, one hundred thirty-one million, twenty-three thousand, one hundred twelve".