11109208031 has 8 divisors (see below), whose sum is σ = 11497230720. Its totient is φ = 10721515168.

The previous prime is 11109208001. The next prime is 11109208057. The reversal of 11109208031 is 13080290111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11109208031 is a prime.

It is a super-2 number, since 2×11109208031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11109208001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12911 + ... + 149616.

It is an arithmetic number, because the mean of its divisors is an integer number (1437153840).

Almost surely, 2^11109208031 is an apocalyptic number.

11109208031 is a deficient number, since it is larger than the sum of its proper divisors (388022689).

11109208031 is a wasteful number, since it uses less digits than its factorization.

11109208031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164913.

The product of its (nonzero) digits is 432, while the sum is 26.

Adding to 11109208031 its reverse (13080290111), we get a palindrome (24189498142).

The spelling of 11109208031 in words is "eleven billion, one hundred nine million, two hundred eight thousand, thirty-one".