31746120896 has 112 divisors (see below), whose sum is σ = 76881776640. Its totient is φ = 12712412160.

The previous prime is 31746120877. The next prime is 31746120919. The reversal of 31746120896 is 69802164713.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 31746120896.

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 15 ways as a sum of consecutive naturals, for example, 363341 + ... + 442163.

Almost surely, 2^31746120896 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 31746120896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38440888320).

31746120896 is an abundant number, since it is smaller than the sum of its proper divisors (45135655744).

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

31746120896 is a wasteful number, since it uses less digits than its factorization.

31746120896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78902 (or 78892 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 31746120896 in words is "thirty-one billion, seven hundred forty-six million, one hundred twenty thousand, eight hundred ninety-six".