131705706 has 16 divisors (see below), whose sum is σ = 287358048. Its totient is φ = 39910800.

The previous prime is 131705699. The next prime is 131705711. The reversal of 131705706 is 607507131.

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 7 ways as a sum of consecutive naturals, for example, 997705 + ... + 997836.

It is an arithmetic number, because the mean of its divisors is an integer number (17959878).

Almost surely, 2^131705706 is an apocalyptic number.

131705706 is an abundant number, since it is smaller than the sum of its proper divisors (155652342).

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

131705706 is a wasteful number, since it uses less digits than its factorization.

131705706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995557.

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 131705706 is about 11476.3106441051. The cubic root of 131705706 is about 508.7856614443.

The spelling of 131705706 in words is "one hundred thirty-one million, seven hundred five thousand, seven hundred six".