1123243132 has 24 divisors (see below), whose sum is σ = 2146999680. Its totient is φ = 509939760.

The previous prime is 1123243129. The next prime is 1123243139. The reversal of 1123243132 is 2313423211.

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 (1123243139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21703 + ... + 52129.

It is an arithmetic number, because the mean of its divisors is an integer number (89458320).

Almost surely, 2^1123243132 is an apocalyptic number.

It is an amenable number.

1123243132 is a deficient number, since it is larger than the sum of its proper divisors (1023756548).

1123243132 is a wasteful number, since it uses less digits than its factorization.

1123243132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31281 (or 31279 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 1123243132 is about 33514.8195877585. The cubic root of 1123243132 is about 1039.5002320169.

Adding to 1123243132 its reverse (2313423211), we get a palindrome (3436666343).

The spelling of 1123243132 in words is "one billion, one hundred twenty-three million, two hundred forty-three thousand, one hundred thirty-two".