2331312312 has 128 divisors (see below), whose sum is σ = 7130880000. Its totient is φ = 620286336.

The previous prime is 2331312307. The next prime is 2331312337. The reversal of 2331312312 is 2132131332.

It is a super-3 number, since 3×2331312312³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182139 + ... + 194517.

It is an arithmetic number, because the mean of its divisors is an integer number (55710000).

Almost surely, 2^2331312312 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 2331312312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3565440000).

2331312312 is an abundant number, since it is smaller than the sum of its proper divisors (4799567688).

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

2331312312 is a wasteful number, since it uses less digits than its factorization.

2331312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12473 (or 12469 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 2331312312 is about 48283.6650638702. The cubic root of 2331312312 is about 1325.9693510885.

Adding to 2331312312 its reverse (2132131332), we get a palindrome (4463443644).

The spelling of 2331312312 in words is "two billion, three hundred thirty-one million, three hundred twelve thousand, three hundred twelve".