31317698304 has 216 divisors, whose sum is σ = 94450828080. Its totient is φ = 10235916288.

The previous prime is 31317698287. The next prime is 31317698369. The reversal of 31317698304 is 40389671313.

It is a tau number, because it is divible by the number of its divisors (216).

It is a self number, because there is not a number n which added to its sum of digits gives 31317698304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19415002 + ... + 19416614.

Almost surely, 2^31317698304 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 31317698304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47225414040).

31317698304 is an abundant number, since it is smaller than the sum of its proper divisors (63133129776).

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

31317698304 is an equidigital number, since it uses as much as digits as its factorization.

31317698304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744 (or 1671 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 31317698304 in words is "thirty-one billion, three hundred seventeen million, six hundred ninety-eight thousand, three hundred four".