135688233 has 8 divisors (see below), whose sum is σ = 181139200. Its totient is φ = 90348048.

The previous prime is 135688219. The next prime is 135688277. The reversal of 135688233 is 332886531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135688233 - 2¹² = 135684137 is a prime.

It is a super-2 number, since 2×135688233² = 36822593149324578, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135688191 and 135688200.

It is not an unprimeable number, because it can be changed into a prime (135688283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24793 + ... + 29766.

It is an arithmetic number, because the mean of its divisors is an integer number (22642400).

Almost surely, 2^135688233 is an apocalyptic number.

It is an amenable number.

135688233 is a deficient number, since it is larger than the sum of its proper divisors (45450967).

135688233 is an equidigital number, since it uses as much as digits as its factorization.

135688233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55391.

The product of its digits is 103680, while the sum is 39.

The square root of 135688233 is about 11648.5292204638. The cubic root of 135688233 is about 513.8630563225.

The spelling of 135688233 in words is "one hundred thirty-five million, six hundred eighty-eight thousand, two hundred thirty-three".