131642718 has 16 divisors (see below), whose sum is σ = 269707536. Its totient is φ = 42810560.

The previous prime is 131642717. The next prime is 131642729. The reversal of 131642718 is 817246131.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131642717) 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, 267321 + ... + 267812.

It is an arithmetic number, because the mean of its divisors is an integer number (16856721).

Almost surely, 2^131642718 is an apocalyptic number.

131642718 is an abundant number, since it is smaller than the sum of its proper divisors (138064818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131642718 is a wasteful number, since it uses less digits than its factorization.

131642718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535179.

The product of its digits is 8064, while the sum is 33.

The square root of 131642718 is about 11473.5660541961. The cubic root of 131642718 is about 508.7045399235.

Adding to 131642718 its reverse (817246131), we get a palindrome (948888849).

The spelling of 131642718 in words is "one hundred thirty-one million, six hundred forty-two thousand, seven hundred eighteen".