131706189 has 8 divisors (see below), whose sum is σ = 195120320. Its totient is φ = 87804108.

The previous prime is 131706161. The next prime is 131706217. The reversal of 131706189 is 981607131.

131706189 is a `hidden beast` number, since 1 + 31 + 7 + 0 + 618 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (131706161) and next prime (131706217).

It is not a de Polignac number, because 131706189 - 2⁸ = 131705933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131706149) by changing a digit.

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, 2438977 + ... + 2439030.

It is an arithmetic number, because the mean of its divisors is an integer number (24390040).

Almost surely, 2^131706189 is an apocalyptic number.

It is an amenable number.

131706189 is a deficient number, since it is larger than the sum of its proper divisors (63414131).

131706189 is an equidigital number, since it uses as much as digits as its factorization.

131706189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878016 (or 4878010 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 131706189 is about 11476.3316874339. The cubic root of 131706189 is about 508.7862833945.

The spelling of 131706189 in words is "one hundred thirty-one million, seven hundred six thousand, one hundred eighty-nine".