131135500 has 24 divisors (see below), whose sum is σ = 286401024. Its totient is φ = 52454000.

The previous prime is 131135491. The next prime is 131135503. The reversal of 131135500 is 5531131.

It is not an unprimeable number, because it can be changed into a prime (131135503) 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, 130636 + ... + 131635.

It is an arithmetic number, because the mean of its divisors is an integer number (11933376).

Almost surely, 2^131135500 is an apocalyptic number.

131135500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131135500 is an abundant number, since it is smaller than the sum of its proper divisors (155265524).

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

131135500 is a wasteful number, since it uses less digits than its factorization.

131135500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262290 (or 262278 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 131135500 is about 11451.4409573643. The cubic root of 131135500 is about 508.0503546092.

Adding to 131135500 its reverse (5531131), we get a palindrome (136666631).

The spelling of 131135500 in words is "one hundred thirty-one million, one hundred thirty-five thousand, five hundred".