135171236 has 12 divisors (see below), whose sum is σ = 237593328. Its totient is φ = 67287432.

The previous prime is 135171221. The next prime is 135171251. The reversal of 135171236 is 632171531.

It is an interprime number because it is at equal distance from previous prime (135171221) and next prime (135171251).

It is a junction number, because it is equal to n+sod(n) for n = 135171199 and 135171208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73526 + ... + 75341.

It is an arithmetic number, because the mean of its divisors is an integer number (19799444).

Almost surely, 2^135171236 is an apocalyptic number.

It is an amenable number.

135171236 is a deficient number, since it is larger than the sum of its proper divisors (102422092).

135171236 is a wasteful number, since it uses less digits than its factorization.

135171236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149098 (or 149096 counting only the distinct ones).

The product of its digits is 3780, while the sum is 29.

The square root of 135171236 is about 11626.3165276024. The cubic root of 135171236 is about 513.2095882453.

The spelling of 135171236 in words is "one hundred thirty-five million, one hundred seventy-one thousand, two hundred thirty-six".