2312131203312 has 120 divisors (see below), whose sum is σ = 6950847702096. Its totient is φ = 660356250624.

The previous prime is 2312131203299. The next prime is 2312131203323. The reversal of 2312131203312 is 2133021312132.

It is a super-3 number, since 3×2312131203312³ (a number of 38 digits) contains 333 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6006138 + ... + 6379494.

Almost surely, 2^{2312131203312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2312131203312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3475423851048).

2312131203312 is an abundant number, since it is smaller than the sum of its proper divisors (4638716498784).

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

2312131203312 is a wasteful number, since it uses less digits than its factorization.

2312131203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376015 (or 376002 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 2312131203312 its reverse (2133021312132), we get a palindrome (4445152515444).

The spelling of 2312131203312 in words is "two trillion, three hundred twelve billion, one hundred thirty-one million, two hundred three thousand, three hundred twelve".