11123031100 has 18 divisors (see below), whose sum is σ = 24136977704. Its totient is φ = 4449212400.

The previous prime is 11123031089. The next prime is 11123031103. The reversal of 11123031100 is 113032111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123031103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55615056 + ... + 55615255.

Almost surely, 2^11123031100 is an apocalyptic number.

11123031100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123031100 is an abundant number, since it is smaller than the sum of its proper divisors (13013946604).

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

11123031100 is a wasteful number, since it uses less digits than its factorization.

11123031100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111230325 (or 111230318 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 11123031100 its reverse (113032111), we get a palindrome (11236063211).

The spelling of 11123031100 in words is "eleven billion, one hundred twenty-three million, thirty-one thousand, one hundred".