31989802623108 has 192 divisors, whose sum is σ = 85607138082816. Its totient is φ = 9209757888000.

The previous prime is 31989802623089. The next prime is 31989802623151. The reversal of 31989802623108 is 80132620898913.

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 63 ways as a sum of consecutive naturals, for example, 98773518 + ... + 99096858.

It is an arithmetic number, because the mean of its divisors is an integer number (445870510848).

Almost surely, 2^{31989802623108} 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 31989802623108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42803569041408).

31989802623108 is an abundant number, since it is smaller than the sum of its proper divisors (53617335459708).

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

31989802623108 is a wasteful number, since it uses less digits than its factorization.

31989802623108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323874 (or 323872 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 60.

The spelling of 31989802623108 in words is "thirty-one trillion, nine hundred eighty-nine billion, eight hundred two million, six hundred twenty-three thousand, one hundred eight".