131170018 has 16 divisors (see below), whose sum is σ = 229106880. Its totient is φ = 55154736.

The previous prime is 131170007. The next prime is 131170019. The reversal of 131170018 is 810071131.

It is not an unprimeable number, because it can be changed into a prime (131170019) 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, 87648 + ... + 89131.

It is an arithmetic number, because the mean of its divisors is an integer number (14319180).

Almost surely, 2^131170018 is an apocalyptic number.

131170018 is a deficient number, since it is larger than the sum of its proper divisors (97936862).

131170018 is a wasteful number, since it uses less digits than its factorization.

131170018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176841.

The product of its (nonzero) digits is 168, while the sum is 22.

The square root of 131170018 is about 11452.9480047715. The cubic root of 131170018 is about 508.0949277001.

The spelling of 131170018 in words is "one hundred thirty-one million, one hundred seventy thousand, eighteen".