31696091073 has 32 divisors (see below), whose sum is σ = 47450891520. Its totient is φ = 20909543040.

The previous prime is 31696091041. The next prime is 31696091083. The reversal of 31696091073 is 37019069613.

31696091073 is a `hidden beast` number, since 31 + 6 + 9 + 609 + 1 + 0 + 7 + 3 = 666.

It is not a de Polignac number, because 31696091073 - 2⁵ = 31696091041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31696091083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1159068 + ... + 1186098.

It is an arithmetic number, because the mean of its divisors is an integer number (1482840360).

Almost surely, 2^31696091073 is an apocalyptic number.

It is an amenable number.

31696091073 is a deficient number, since it is larger than the sum of its proper divisors (15754800447).

31696091073 is a wasteful number, since it uses less digits than its factorization.

31696091073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27494 (or 27488 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The spelling of 31696091073 in words is "thirty-one billion, six hundred ninety-six million, ninety-one thousand, seventy-three".