131144018 has 16 divisors (see below), whose sum is σ = 208674144. Its totient is φ = 61600320.

The previous prime is 131144017. The next prime is 131144047. The reversal of 131144018 is 810441131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131143984 and 131144002.

It is not an unprimeable number, because it can be changed into a prime (131144011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16673 + ... + 23243.

It is an arithmetic number, because the mean of its divisors is an integer number (13042134).

Almost surely, 2^131144018 is an apocalyptic number.

131144018 is a deficient number, since it is larger than the sum of its proper divisors (77530126).

131144018 is a wasteful number, since it uses less digits than its factorization.

131144018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7177.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 131144018 is about 11451.8128695853. The cubic root of 131144018 is about 508.0613546289.

Adding to 131144018 its reverse (810441131), we get a palindrome (941585149).

The spelling of 131144018 in words is "one hundred thirty-one million, one hundred forty-four thousand, eighteen".