1123203544 has 32 divisors (see below), whose sum is σ = 2249956800. Its totient is φ = 524098080.

The previous prime is 1123203541. The next prime is 1123203607. The reversal of 1123203544 is 4453023211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123203541) 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, 44962 + ... + 65329.

It is an arithmetic number, because the mean of its divisors is an integer number (70311150).

Almost surely, 2^1123203544 is an apocalyptic number.

It is an amenable number.

1123203544 is an abundant number, since it is smaller than the sum of its proper divisors (1126753256).

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

1123203544 is a wasteful number, since it uses less digits than its factorization.

1123203544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110383 (or 110379 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1123203544 is about 33514.2289781520. The cubic root of 1123203544 is about 1039.4880196955.

Adding to 1123203544 its reverse (4453023211), we get a palindrome (5576226755).

The spelling of 1123203544 in words is "one billion, one hundred twenty-three million, two hundred three thousand, five hundred forty-four".