31904758368 has 144 divisors (see below), whose sum is σ = 103771100160. Its totient is φ = 9108557568.

The previous prime is 31904758367. The next prime is 31904758373. The reversal of 31904758368 is 86385740913.

31904758368 is a `hidden beast` number, since 3 + 1 + 90 + 475 + 83 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31904758363) 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, 2935921 + ... + 2946767.

It is an arithmetic number, because the mean of its divisors is an integer number (720632640).

Almost surely, 2^31904758368 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 31904758368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51885550080).

31904758368 is an abundant number, since it is smaller than the sum of its proper divisors (71866341792).

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

31904758368 is a wasteful number, since it uses less digits than its factorization.

31904758368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12329 (or 12318 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 31904758368 in words is "thirty-one billion, nine hundred four million, seven hundred fifty-eight thousand, three hundred sixty-eight".