131906018 has 16 divisors (see below), whose sum is σ = 208746720. Its totient is φ = 62339616.

The previous prime is 131906011. The next prime is 131906051. The reversal of 131906018 is 810609131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131906011) 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, 14030 + ... + 21462.

It is an arithmetic number, because the mean of its divisors is an integer number (13046670).

Almost surely, 2^131906018 is an apocalyptic number.

131906018 is a deficient number, since it is larger than the sum of its proper divisors (76840702).

131906018 is a wasteful number, since it uses less digits than its factorization.

131906018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7921.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 131906018 is about 11485.0345232394. The cubic root of 131906018 is about 509.0434691783.

The spelling of 131906018 in words is "one hundred thirty-one million, nine hundred six thousand, eighteen".