31867373890016 has 144 divisors (see below), whose sum is σ = 74416315637664. Its totient is φ = 13389429021696.

The previous prime is 31867373890013. The next prime is 31867373890031. The reversal of 31867373890016 is 61009837376813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31867373890013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108137366 + ... + 108431658.

It is an arithmetic number, because the mean of its divisors is an integer number (516779969706).

Almost surely, 2^{31867373890016} 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 31867373890016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37208157818832).

31867373890016 is an abundant number, since it is smaller than the sum of its proper divisors (42548941747648).

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

31867373890016 is a wasteful number, since it uses less digits than its factorization.

31867373890016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295673 (or 295658 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 62.

The spelling of 31867373890016 in words is "thirty-one trillion, eight hundred sixty-seven billion, three hundred seventy-three million, eight hundred ninety thousand, sixteen".