31873791708168 has 32 divisors (see below), whose sum is σ = 79755817277760. Its totient is φ = 10615085501760.

The previous prime is 31873791708163. The next prime is 31873791708169. The reversal of 31873791708168 is 86180719737813.

It is not an unprimeable number, because it can be changed into a prime (31873791708163) 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, 594456028 + ... + 594509643.

It is an arithmetic number, because the mean of its divisors is an integer number (2492369289930).

Almost surely, 2^{31873791708168} is an apocalyptic number.

It is an amenable number.

31873791708168 is an abundant number, since it is smaller than the sum of its proper divisors (47882025569592).

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

31873791708168 is a wasteful number, since it uses less digits than its factorization.

31873791708168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188966797 (or 1188966793 counting only the distinct ones).

The product of its (nonzero) digits is 85349376, while the sum is 69.

The spelling of 31873791708168 in words is "thirty-one trillion, eight hundred seventy-three billion, seven hundred ninety-one million, seven hundred eight thousand, one hundred sixty-eight".