31797635328 has 108 divisors (see below), whose sum is σ = 91732496128. Its totient is φ = 10593192960.

The previous prime is 31797635293. The next prime is 31797635333. The reversal of 31797635328 is 82353679713.

31797635328 is a `hidden beast` number, since 3 + 17 + 97 + 6 + 3 + 532 + 8 = 666.

It is a super-2 number, since 2×31797635328² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6151401 + ... + 6156567.

Almost surely, 2^31797635328 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 31797635328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45866248064).

31797635328 is an abundant number, since it is smaller than the sum of its proper divisors (59934860800).

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

31797635328 is a wasteful number, since it uses less digits than its factorization.

31797635328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7860 (or 7843 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The spelling of 31797635328 in words is "thirty-one billion, seven hundred ninety-seven million, six hundred thirty-five thousand, three hundred twenty-eight".