31682704512 has 128 divisors (see below), whose sum is σ = 86208572160. Its totient is φ = 10304847872.

The previous prime is 31682704489. The next prime is 31682704513. The reversal of 31682704512 is 21540728613.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (31682704513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6368458 + ... + 6373430.

It is an arithmetic number, because the mean of its divisors is an integer number (673504470).

Almost surely, 2^31682704512 is an apocalyptic number.

31682704512 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31682704512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43104286080).

31682704512 is an abundant number, since it is smaller than the sum of its proper divisors (54525867648).

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

31682704512 is a wasteful number, since it uses less digits than its factorization.

31682704512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390 (or 5378 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 31682704512 in words is "thirty-one billion, six hundred eighty-two million, seven hundred four thousand, five hundred twelve".