2231111320312 has 48 divisors (see below), whose sum is σ = 4874761323360. Its totient is φ = 954533293056.

The previous prime is 2231111320259. The next prime is 2231111320337. The reversal of 2231111320312 is 2130231111322.

It is a super-3 number, since 3×2231111320312³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4705888 + ... + 5158255.

It is an arithmetic number, because the mean of its divisors is an integer number (101557527570).

Almost surely, 2^{2231111320312} is an apocalyptic number.

It is an amenable number.

2231111320312 is an abundant number, since it is smaller than the sum of its proper divisors (2643650003048).

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

2231111320312 is a wasteful number, since it uses less digits than its factorization.

2231111320312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9864740 (or 9864729 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2231111320312 its reverse (2130231111322), we get a palindrome (4361342431634).

The spelling of 2231111320312 in words is "two trillion, two hundred thirty-one billion, one hundred eleven million, three hundred twenty thousand, three hundred twelve".