31817611112 has 32 divisors (see below), whose sum is σ = 70379973120. Its totient is φ = 13196243520.

The previous prime is 31817611099. The next prime is 31817611123. The reversal of 31817611112 is 21111671813.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9162323 + ... + 9165794.

It is an arithmetic number, because the mean of its divisors is an integer number (2199374160).

Almost surely, 2^31817611112 is an apocalyptic number.

It is an amenable number.

31817611112 is an abundant number, since it is smaller than the sum of its proper divisors (38562362008).

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

31817611112 is a wasteful number, since it uses less digits than its factorization.

31817611112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18328161 (or 18328157 counting only the distinct ones).

The product of its digits is 2016, while the sum is 32.

The spelling of 31817611112 in words is "thirty-one billion, eight hundred seventeen million, six hundred eleven thousand, one hundred twelve".