31908968792063 has 8 divisors (see below), whose sum is σ = 36857418498000. Its totient is φ = 27301791479680.

The previous prime is 31908968791943. The next prime is 31908968792087. The reversal of 31908968792063 is 36029786980913.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31908968792063 - 2¹⁰ = 31908968791039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31908968792263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85318098188 + ... + 85318098561.

It is an arithmetic number, because the mean of its divisors is an integer number (4607177312250).

Almost surely, 2^{31908968792063} is an apocalyptic number.

31908968792063 is a deficient number, since it is larger than the sum of its proper divisors (4948449705937).

31908968792063 is a wasteful number, since it uses less digits than its factorization.

31908968792063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170636196777.

The product of its (nonzero) digits is 211631616, while the sum is 71.

The spelling of 31908968792063 in words is "thirty-one trillion, nine hundred eight billion, nine hundred sixty-eight million, seven hundred ninety-two thousand, sixty-three".