1123203444 has 48 divisors (see below), whose sum is σ = 2871106560. Its totient is φ = 338931040.

The previous prime is 1123203443. The next prime is 1123203461. The reversal of 1123203444 is 4443023211.

1123203444 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1123203444² = 2523171953226922272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123203443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13747 + ... + 49349.

It is an arithmetic number, because the mean of its divisors is an integer number (59814720).

Almost surely, 2^1123203444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123203444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1435553280).

1123203444 is an abundant number, since it is smaller than the sum of its proper divisors (1747903116).

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

1123203444 is a wasteful number, since it uses less digits than its factorization.

1123203444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35860 (or 35858 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1123203444 is about 33514.2274862483. The cubic root of 1123203444 is about 1039.4879888466.

Adding to 1123203444 its reverse (4443023211), we get a palindrome (5566226655).

The spelling of 1123203444 in words is "one billion, one hundred twenty-three million, two hundred three thousand, four hundred forty-four".