131718500 has 24 divisors (see below), whose sum is σ = 287674296. Its totient is φ = 52687200.

The previous prime is 131718491. The next prime is 131718541. The reversal of 131718500 is 5817131.

It can be written as a sum of positive squares in 4 ways, for example, as 341056 + 131377444 = 584^2 + 11462^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131718500.

It is an unprimeable number.

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, 131219 + ... + 132218.

It is an arithmetic number, because the mean of its divisors is an integer number (11986429).

Almost surely, 2^131718500 is an apocalyptic number.

131718500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131718500 is an abundant number, since it is smaller than the sum of its proper divisors (155955796).

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

131718500 is a wasteful number, since it uses less digits than its factorization.

131718500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263456 (or 263444 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 131718500 is about 11476.8680396701. The cubic root of 131718500 is about 508.8021355293.

The spelling of 131718500 in words is "one hundred thirty-one million, seven hundred eighteen thousand, five hundred".