31108355370312 has 128 divisors (see below), whose sum is σ = 86663880806400. Its totient is φ = 9224310963200.

The previous prime is 31108355370293. The next prime is 31108355370317. The reversal of 31108355370312 is 21307355380113.

It is not an unprimeable number, because it can be changed into a prime (31108355370317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60780112 + ... + 61289792.

It is an arithmetic number, because the mean of its divisors is an integer number (677061568800).

Almost surely, 2^{31108355370312} 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 31108355370312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43331940403200).

31108355370312 is an abundant number, since it is smaller than the sum of its proper divisors (55555525436088).

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

31108355370312 is a wasteful number, since it uses less digits than its factorization.

31108355370312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514667 (or 514663 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 31108355370312 in words is "thirty-one trillion, one hundred eight billion, three hundred fifty-five million, three hundred seventy thousand, three hundred twelve".