11031123400 has 96 divisors (see below), whose sum is σ = 28181008800. Its totient is φ = 3982348800.

The previous prime is 11031123371. The next prime is 11031123401. The reversal of 11031123400 is 432113011.

It is not an unprimeable number, because it can be changed into a prime (11031123401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 287764 + ... + 323836.

It is an arithmetic number, because the mean of its divisors is an integer number (293552175).

Almost surely, 2^11031123400 is an apocalyptic number.

11031123400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11031123400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14090504400).

11031123400 is an abundant number, since it is smaller than the sum of its proper divisors (17149885400).

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

11031123400 is a wasteful number, since it uses less digits than its factorization.

11031123400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36239 (or 36230 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11031123400 its reverse (432113011), we get a palindrome (11463236411).

It can be divided in two parts, 11031 and 123400, that added together give a palindrome (134431).

The spelling of 11031123400 in words is "eleven billion, thirty-one million, one hundred twenty-three thousand, four hundred".