12311103012 has 24 divisors (see below), whose sum is σ = 30935592576. Its totient is φ = 3788031648.

The previous prime is 12311102987. The next prime is 12311103023. The reversal of 12311103012 is 21030111321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12311102982 and 12311103000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39458508 + ... + 39458819.

It is an arithmetic number, because the mean of its divisors is an integer number (1288983024).

Almost surely, 2^12311103012 is an apocalyptic number.

12311103012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12311103012 is an abundant number, since it is smaller than the sum of its proper divisors (18624489564).

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

12311103012 is a wasteful number, since it uses less digits than its factorization.

12311103012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78917347 (or 78917345 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12311103012 its reverse (21030111321), we get a palindrome (33341214333).

The spelling of 12311103012 in words is "twelve billion, three hundred eleven million, one hundred three thousand, twelve".