135631844 has 6 divisors (see below), whose sum is σ = 237355734. Its totient is φ = 67815920.

The previous prime is 135631843. The next prime is 135631849. The reversal of 135631844 is 448136531.

135631844 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 114746944 + 20884900 = 10712^2 + 4570^2 .

It is not an unprimeable number, because it can be changed into a prime (135631841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16953977 + ... + 16953984.

It is an arithmetic number, because the mean of its divisors is an integer number (39559289).

Almost surely, 2^135631844 is an apocalyptic number.

It is an amenable number.

135631844 is a deficient number, since it is larger than the sum of its proper divisors (101723890).

135631844 is a wasteful number, since it uses less digits than its factorization.

135631844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33907965 (or 33907963 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 135631844 is about 11646.1085346136. The cubic root of 135631844 is about 513.7918631219.

The spelling of 135631844 in words is "one hundred thirty-five million, six hundred thirty-one thousand, eight hundred forty-four".