31705457706 has 24 divisors (see below), whose sum is σ = 73979401860. Its totient is φ = 9755525376.

The previous prime is 31705457689. The next prime is 31705457711. The reversal of 31705457706 is 60775450713.

31705457706 is a `hidden beast` number, since 3 + 1 + 70 + 5 + 4 + 577 + 0 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31653747225 + 51710481 = 177915^2 + 7191^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67746471 + ... + 67746938.

Almost surely, 2^31705457706 is an apocalyptic number.

31705457706 is an abundant number, since it is smaller than the sum of its proper divisors (42273944154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31705457706 is a wasteful number, since it uses less digits than its factorization.

31705457706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135493430 (or 135493427 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 45.

The spelling of 31705457706 in words is "thirty-one billion, seven hundred five million, four hundred fifty-seven thousand, seven hundred six".