31085696905 has 8 divisors (see below), whose sum is σ = 37303809984. Its totient is φ = 24867908400.

The previous prime is 31085696893. The next prime is 31085696933. The reversal of 31085696905 is 50969658013.

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

It is not a de Polignac number, because 31085696905 - 2⁹ = 31085696393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259810 + ... + 360100.

It is an arithmetic number, because the mean of its divisors is an integer number (4662976248).

Almost surely, 2^31085696905 is an apocalyptic number.

It is an amenable number.

31085696905 is a deficient number, since it is larger than the sum of its proper divisors (6218113079).

31085696905 is a wasteful number, since it uses less digits than its factorization.

31085696905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162287.

The product of its (nonzero) digits is 1749600, while the sum is 52.

The spelling of 31085696905 in words is "thirty-one billion, eighty-five million, six hundred ninety-six thousand, nine hundred five".