31123111003112 has 128 divisors (see below), whose sum is σ = 62926147574400. Its totient is φ = 14387814604800.

The previous prime is 31123111003087. The next prime is 31123111003151. The reversal of 31123111003112 is 21130011132113.

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, 419802287 + ... + 419876417.

It is an arithmetic number, because the mean of its divisors is an integer number (491610527925).

Almost surely, 2^{31123111003112} is an apocalyptic number.

It is an amenable number.

31123111003112 is an abundant number, since it is smaller than the sum of its proper divisors (31803036571288).

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

31123111003112 is a wasteful number, since it uses less digits than its factorization.

31123111003112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74627 (or 74623 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 31123111003112 its reverse (21130011132113), we get a palindrome (52253122135225).

The spelling of 31123111003112 in words is "thirty-one trillion, one hundred twenty-three billion, one hundred eleven million, three thousand, one hundred twelve".