135865371 has 16 divisors (see below), whose sum is σ = 191030400. Its totient is φ = 85655808.

The previous prime is 135865357. The next prime is 135865381. The reversal of 135865371 is 173568531.

It is a happy number.

It is not a de Polignac number, because 135865371 - 2⁷ = 135865243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135865381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35755 + ... + 39371.

It is an arithmetic number, because the mean of its divisors is an integer number (11939400).

Almost surely, 2^135865371 is an apocalyptic number.

135865371 is a deficient number, since it is larger than the sum of its proper divisors (55165029).

135865371 is a wasteful number, since it uses less digits than its factorization.

135865371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298.

The product of its digits is 75600, while the sum is 39.

The square root of 135865371 is about 11656.1301897328. The cubic root of 135865371 is about 514.0865713872.

The spelling of 135865371 in words is "one hundred thirty-five million, eight hundred sixty-five thousand, three hundred seventy-one".