12312103111 has 32 divisors (see below), whose sum is σ = 15734177280. Its totient is φ = 9356688000.

The previous prime is 12312103079. The next prime is 12312103147. The reversal of 12312103111 is 11130121321.

It is a happy number.

It is not a de Polignac number, because 12312103111 - 2⁵ = 12312103079 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 (12312103211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 509245 + ... + 532873.

It is an arithmetic number, because the mean of its divisors is an integer number (491693040).

Almost surely, 2^12312103111 is an apocalyptic number.

12312103111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12312103111 is a deficient number, since it is larger than the sum of its proper divisors (3422074169).

12312103111 is a wasteful number, since it uses less digits than its factorization.

12312103111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23815.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12312103111 its reverse (11130121321), we get a palindrome (23442224432).

It can be divided in two parts, 1231210 and 3111, that added together give a palindrome (1234321).

The spelling of 12312103111 in words is "twelve billion, three hundred twelve million, one hundred three thousand, one hundred eleven".