31111333122012 has 96 divisors (see below), whose sum is σ = 85503455331840. Its totient is φ = 8680099226880.

The previous prime is 31111333121993. The next prime is 31111333122047. The reversal of 31111333122012 is 21022133311113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22636008 + ... + 23971055.

It is an arithmetic number, because the mean of its divisors is an integer number (890660993040).

Almost surely, 2^{31111333122012} is an apocalyptic number.

It is an amenable number.

31111333122012 is an abundant number, since it is smaller than the sum of its proper divisors (54392122209828).

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

31111333122012 is a wasteful number, since it uses less digits than its factorization.

31111333122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46607483 (or 46607481 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 31111333122012 its reverse (21022133311113), we get a palindrome (52133466433125).

The spelling of 31111333122012 in words is "thirty-one trillion, one hundred eleven billion, three hundred thirty-three million, one hundred twenty-two thousand, twelve".