12000031103 has 4 divisors (see below), whose sum is σ = 12025083840. Its totient is φ = 11974978368.

The previous prime is 12000031067. The next prime is 12000031123. The reversal of 12000031103 is 30113000021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30113000021 = 13 ⋅2316384617.

It is a cyclic number.

It is not a de Polignac number, because 12000031103 - 2¹² = 12000027007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000031123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12525650 + ... + 12526607.

It is an arithmetic number, because the mean of its divisors is an integer number (3006270960).

Almost surely, 2^12000031103 is an apocalyptic number.

12000031103 is a deficient number, since it is larger than the sum of its proper divisors (25052737).

12000031103 is an equidigital number, since it uses as much as digits as its factorization.

12000031103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25052736.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 12000031103 its reverse (30113000021), we get a palindrome (42113031124).

The spelling of 12000031103 in words is "twelve billion, thirty-one thousand, one hundred three".