131725206 has 12 divisors (see below), whose sum is σ = 285404652. Its totient is φ = 43908396.

The previous prime is 131725199. The next prime is 131725247. The reversal of 131725206 is 602527131.

It is a happy number.

131725206 is a `hidden beast` number, since 131 + 7 + 2 + 520 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 131725206.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 3659016 + ... + 3659051.

It is an arithmetic number, because the mean of its divisors is an integer number (23783721).

Almost surely, 2^131725206 is an apocalyptic number.

131725206 is an abundant number, since it is smaller than the sum of its proper divisors (153679446).

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

131725206 is a wasteful number, since it uses less digits than its factorization.

131725206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7318075 (or 7318072 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 131725206 is about 11477.1601888272. The cubic root of 131725206 is about 508.8107700269.

The spelling of 131725206 in words is "one hundred thirty-one million, seven hundred twenty-five thousand, two hundred six".