31096819812 has 96 divisors (see below), whose sum is σ = 76446720000. Its totient is φ = 9819418752.

The previous prime is 31096819771. The next prime is 31096819829. The reversal of 31096819812 is 21891869013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15555189 + ... + 15557187.

It is an arithmetic number, because the mean of its divisors is an integer number (796320000).

Almost surely, 2^31096819812 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 31096819812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38223360000).

31096819812 is an abundant number, since it is smaller than the sum of its proper divisors (45349900188).

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

31096819812 is a wasteful number, since it uses less digits than its factorization.

31096819812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545 (or 2543 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The spelling of 31096819812 in words is "thirty-one billion, ninety-six million, eight hundred nineteen thousand, eight hundred twelve".