31975456605 has 16 divisors (see below), whose sum is σ = 51551273664. Its totient is φ = 16923395840.

The previous prime is 31975456559. The next prime is 31975456619. The reversal of 31975456605 is 50665457913.

It is not a de Polignac number, because 31975456605 - 2¹⁴ = 31975440221 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8134284 + ... + 8138213.

It is an arithmetic number, because the mean of its divisors is an integer number (3221954604).

Almost surely, 2^31975456605 is an apocalyptic number.

It is an amenable number.

31975456605 is a deficient number, since it is larger than the sum of its proper divisors (19575817059).

31975456605 is a wasteful number, since it uses less digits than its factorization.

31975456605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16272636.

The product of its (nonzero) digits is 3402000, while the sum is 51.

The spelling of 31975456605 in words is "thirty-one billion, nine hundred seventy-five million, four hundred fifty-six thousand, six hundred five".