12312312312 has 16 divisors (see below), whose sum is σ = 30780780840. Its totient is φ = 4104104096.

The previous prime is 12312312263. The next prime is 12312312347. The reversal of 12312312312 is 21321321321.

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 3 ways as a sum of consecutive naturals, for example, 256506483 + ... + 256506530.

Almost surely, 2^12312312312 is an apocalyptic number.

12312312312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12312312312 is an abundant number, since it is smaller than the sum of its proper divisors (18468468528).

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

12312312312 is a wasteful number, since it uses less digits than its factorization.

12312312312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513013022 (or 513013018 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 12312312312 its reverse (21321321321), we get a palindrome (33633633633).

Subtracting 12312312312 from its reverse (21321321321), we obtain a palindrome (9009009009).

The spelling of 12312312312 in words is "twelve billion, three hundred twelve million, three hundred twelve thousand, three hundred twelve".