12312112344 has 32 divisors (see below), whose sum is σ = 35177464320. Its totient is φ = 3517746336.

The previous prime is 12312112301. The next prime is 12312112363. The reversal of 12312112344 is 44321121321.

It is a super-2 number, since 2×12312112344² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 36643024 + ... + 36643359.

It is an arithmetic number, because the mean of its divisors is an integer number (1099295760).

Almost surely, 2^12312112344 is an apocalyptic number.

12312112344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12312112344 is an abundant number, since it is smaller than the sum of its proper divisors (22865351976).

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

12312112344 is a wasteful number, since it uses less digits than its factorization.

12312112344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73286399 (or 73286395 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

Adding to 12312112344 its reverse (44321121321), we get a palindrome (56633233665).

The spelling of 12312112344 in words is "twelve billion, three hundred twelve million, one hundred twelve thousand, three hundred forty-four".