12311004012 has 48 divisors (see below), whose sum is σ = 30175891200. Its totient is φ = 3898890688.

The previous prime is 12311003993. The next prime is 12311004073. The reversal of 12311004012 is 21040011321.

It is a super-2 number, since 2×12311004012² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12311003982 and 12311004000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108558 + ... + 190805.

It is an arithmetic number, because the mean of its divisors is an integer number (628664400).

Almost surely, 2^12311004012 is an apocalyptic number.

12311004012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12311004012 is an abundant number, since it is smaller than the sum of its proper divisors (17864887188).

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

12311004012 is a wasteful number, since it uses less digits than its factorization.

12311004012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299542 (or 299540 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12311004012 its reverse (21040011321), we get a palindrome (33351015333).

The spelling of 12311004012 in words is "twelve billion, three hundred eleven million, four thousand, twelve".