1123143132 has 12 divisors (see below), whose sum is σ = 2620667336. Its totient is φ = 374381040.

The previous prime is 1123143121. The next prime is 1123143137. The reversal of 1123143132 is 2313413211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1123143132² = 2522900989917538848, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1123143099 and 1123143108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123143137) 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 3 ways as a sum of consecutive naturals, for example, 46797619 + ... + 46797642.

Almost surely, 2^1123143132 is an apocalyptic number.

1123143132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123143132 is an abundant number, since it is smaller than the sum of its proper divisors (1497524204).

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

1123143132 is a wasteful number, since it uses less digits than its factorization.

1123143132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93595268 (or 93595266 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 1123143132 is about 33513.3276772093. The cubic root of 1123143132 is about 1039.4693829202.

Adding to 1123143132 its reverse (2313413211), we get a palindrome (3436556343).

The spelling of 1123143132 in words is "one billion, one hundred twenty-three million, one hundred forty-three thousand, one hundred thirty-two".