135731800 has 24 divisors (see below), whose sum is σ = 315576900. Its totient is φ = 54292640.

The previous prime is 135731789. The next prime is 135731807. The reversal of 135731800 is 8137531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135731807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339130 + ... + 339529.

Almost surely, 2^135731800 is an apocalyptic number.

135731800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135731800 is an abundant number, since it is smaller than the sum of its proper divisors (179845100).

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

135731800 is a wasteful number, since it uses less digits than its factorization.

135731800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678675 (or 678666 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 135731800 is about 11650.3991347936. The cubic root of 135731800 is about 513.9180477678.

The spelling of 135731800 in words is "one hundred thirty-five million, seven hundred thirty-one thousand, eight hundred".