31123211001112 has 16 divisors (see below), whose sum is σ = 58392289153800. Its totient is φ = 15551933893440.

The previous prime is 31123211001107. The next prime is 31123211001187. The reversal of 31123211001112 is 21110011232113.

It is a self number, because there is not a number n which added to its sum of digits gives 31123211001112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208937214 + ... + 1208962957.

Almost surely, 2^{31123211001112} is an apocalyptic number.

It is an amenable number.

31123211001112 is a deficient number, since it is larger than the sum of its proper divisors (27269078152688).

31123211001112 is a wasteful number, since it uses less digits than its factorization.

31123211001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417901786 (or 2417901782 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 31123211001112 its reverse (21110011232113), we get a palindrome (52233222233225).

The spelling of 31123211001112 in words is "thirty-one trillion, one hundred twenty-three billion, two hundred eleven million, one thousand, one hundred twelve".