131518154 has 16 divisors (see below), whose sum is σ = 209107656. Its totient is φ = 61824000.

The previous prime is 131518111. The next prime is 131518159. The reversal of 131518154 is 451815131.

131518154 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 122655625 + 8862529 = 11075^2 + 2977^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131518159) 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, 45554 + ... + 48354.

Almost surely, 2^131518154 is an apocalyptic number.

131518154 is a deficient number, since it is larger than the sum of its proper divisors (77589502).

131518154 is a wasteful number, since it uses less digits than its factorization.

131518154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4201.

The product of its digits is 2400, while the sum is 29.

The square root of 131518154 is about 11468.1364658780. The cubic root of 131518154 is about 508.5440391629.

The spelling of 131518154 in words is "one hundred thirty-one million, five hundred eighteen thousand, one hundred fifty-four".