12103110031 has 4 divisors (see below), whose sum is σ = 12114433000. Its totient is φ = 12091787064.

The previous prime is 12103110023. The next prime is 12103110113. The reversal of 12103110031 is 13001130121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12103110031 - 2³ = 12103110023 is a prime.

It is a super-2 number, since 2×12103110031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12103109993 and 12103110020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103110631) 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 3 ways as a sum of consecutive naturals, for example, 5659881 + ... + 5662018.

It is an arithmetic number, because the mean of its divisors is an integer number (3028608250).

Almost surely, 2^12103110031 is an apocalyptic number.

12103110031 is a deficient number, since it is larger than the sum of its proper divisors (11322969).

12103110031 is a wasteful number, since it uses less digits than its factorization.

12103110031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11322968.

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

Adding to 12103110031 its reverse (13001130121), we get a palindrome (25104240152).

The spelling of 12103110031 in words is "twelve billion, one hundred three million, one hundred ten thousand, thirty-one".