31924737168 has 80 divisors (see below), whose sum is σ = 83670537600. Its totient is φ = 10487741440.

The previous prime is 31924737157. The next prime is 31924737179. The reversal of 31924737168 is 86173742913.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31924737157) and next prime (31924737179).

It is a self number, because there is not a number n which added to its sum of digits gives 31924737168.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1316578 + ... + 1340606.

It is an arithmetic number, because the mean of its divisors is an integer number (1045881720).

Almost surely, 2^31924737168 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 31924737168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41835268800).

31924737168 is an abundant number, since it is smaller than the sum of its proper divisors (51745800432).

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

31924737168 is a wasteful number, since it uses less digits than its factorization.

31924737168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24440 (or 24434 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 51.

The spelling of 31924737168 in words is "thirty-one billion, nine hundred twenty-four million, seven hundred thirty-seven thousand, one hundred sixty-eight".