31908906794 has 16 divisors (see below), whose sum is σ = 49916702976. Its totient is φ = 15280617600.

The previous prime is 31908906769. The next prime is 31908906797. The reversal of 31908906794 is 49760980913.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31908906797) 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, 2646872 + ... + 2658899.

It is an arithmetic number, because the mean of its divisors is an integer number (3119793936).

Almost surely, 2^31908906794 is an apocalyptic number.

31908906794 is a deficient number, since it is larger than the sum of its proper divisors (18007796182).

31908906794 is a wasteful number, since it uses less digits than its factorization.

31908906794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305901.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The spelling of 31908906794 in words is "thirty-one billion, nine hundred eight million, nine hundred six thousand, seven hundred ninety-four".