31039821317712 has 160 divisors (see below), whose sum is σ = 83738515392000. Its totient is φ = 9895043597824.

The previous prime is 31039821317671. The next prime is 31039821317719. The reversal of 31039821317712 is 21771312893013.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31039821317719) by changing a digit.

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, 1642396039 + ... + 1642414937.

It is an arithmetic number, because the mean of its divisors is an integer number (523365721200).

Almost surely, 2^{31039821317712} 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 31039821317712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41869257696000).

31039821317712 is an abundant number, since it is smaller than the sum of its proper divisors (52698694074288).

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

31039821317712 is a wasteful number, since it uses less digits than its factorization.

31039821317712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30073 (or 30067 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The spelling of 31039821317712 in words is "thirty-one trillion, thirty-nine billion, eight hundred twenty-one million, three hundred seventeen thousand, seven hundred twelve".