135181137 has 32 divisors (see below), whose sum is σ = 222630912. Its totient is φ = 71049024.

The previous prime is 135181133. The next prime is 135181139. The reversal of 135181137 is 731181531.

It is not a de Polignac number, because 135181137 - 2² = 135181133 is a prime.

It is a super-2 number, since 2×135181137² = 36547879601225538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135181133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94018 + ... + 95444.

It is an arithmetic number, because the mean of its divisors is an integer number (6957216).

Almost surely, 2^135181137 is an apocalyptic number.

It is an amenable number.

135181137 is a deficient number, since it is larger than the sum of its proper divisors (87449775).

135181137 is a wasteful number, since it uses less digits than its factorization.

135181137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797.

The product of its digits is 2520, while the sum is 30.

The square root of 135181137 is about 11626.7423210459. The cubic root of 135181137 is about 513.2221184360. Note that the first 3 decimals are identical.

The spelling of 135181137 in words is "one hundred thirty-five million, one hundred eighty-one thousand, one hundred thirty-seven".