312102331112 has 128 divisors (see below), whose sum is σ = 695298038400. Its totient is φ = 129471283200.

The previous prime is 312102331081. The next prime is 312102331117. The reversal of 312102331112 is 211133201213.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (312102331117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69647912 + ... + 69652392.

It is an arithmetic number, because the mean of its divisors is an integer number (5432015925).

Almost surely, 2^312102331112 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 312102331112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347649019200).

312102331112 is an abundant number, since it is smaller than the sum of its proper divisors (383195707288).

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

312102331112 is a wasteful number, since it uses less digits than its factorization.

312102331112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5187 (or 5183 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312102331112 its reverse (211133201213), we get a palindrome (523235532325).

The spelling of 312102331112 in words is "three hundred twelve billion, one hundred two million, three hundred thirty-one thousand, one hundred twelve".