31705644106 has 8 divisors (see below), whose sum is σ = 47571953220. Its totient is φ = 15848326368.

The previous prime is 31705644067. The next prime is 31705644127. The reversal of 31705644106 is 60144650713.

It can be written as a sum of positive squares in 2 ways, for example, as 29878851025 + 1826793081 = 172855^2 + 42741^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 2239021 + ... + 2253136.

Almost surely, 2^31705644106 is an apocalyptic number.

31705644106 is a deficient number, since it is larger than the sum of its proper divisors (15866309114).

31705644106 is a wasteful number, since it uses less digits than its factorization.

31705644106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4495688.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 31705644106 in words is "thirty-one billion, seven hundred five million, six hundred forty-four thousand, one hundred six".