135131500 has 48 divisors (see below), whose sum is σ = 337296960. Its totient is φ = 46329600.

The previous prime is 135131497. The next prime is 135131501. The reversal of 135131500 is 5131531.

It is not an unprimeable number, because it can be changed into a prime (135131501) 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 15 ways as a sum of consecutive naturals, for example, 15805 + ... + 22804.

It is an arithmetic number, because the mean of its divisors is an integer number (7027020).

Almost surely, 2^135131500 is an apocalyptic number.

135131500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135131500 is an abundant number, since it is smaller than the sum of its proper divisors (202165460).

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

135131500 is a wasteful number, since it uses less digits than its factorization.

135131500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38635 (or 38623 counting only the distinct ones).

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

The square root of 135131500 is about 11624.6075202563. The cubic root of 135131500 is about 513.1592942740.

The spelling of 135131500 in words is "one hundred thirty-five million, one hundred thirty-one thousand, five hundred".