131255806 has 16 divisors (see below), whose sum is σ = 215165808. Its totient is φ = 59555200.

The previous prime is 131255791. The next prime is 131255807. The reversal of 131255806 is 608552131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131255807) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8016 + ... + 18076.

It is an arithmetic number, because the mean of its divisors is an integer number (13447863).

Almost surely, 2^131255806 is an apocalyptic number.

131255806 is a deficient number, since it is larger than the sum of its proper divisors (83910002).

131255806 is a wasteful number, since it uses less digits than its factorization.

131255806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10667.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 131255806 is about 11456.6926292015. The cubic root of 131255806 is about 508.2056718807.

The spelling of 131255806 in words is "one hundred thirty-one million, two hundred fifty-five thousand, eight hundred six".