135009233 has 4 divisors (see below), whose sum is σ = 135298800. Its totient is φ = 134719668.

The previous prime is 135009197. The next prime is 135009299. The reversal of 135009233 is 332900531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 332900531 = 8297 ⋅40123.

It is a cyclic number.

It is not a de Polignac number, because 135009233 - 2⁸ = 135008977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135000233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144083 + ... + 145016.

It is an arithmetic number, because the mean of its divisors is an integer number (33824700).

Almost surely, 2^135009233 is an apocalyptic number.

It is an amenable number.

135009233 is a deficient number, since it is larger than the sum of its proper divisors (289567).

135009233 is an equidigital number, since it uses as much as digits as its factorization.

135009233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289566.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 135009233 is about 11619.3473568871. The cubic root of 135009233 is about 513.0044787052.

Adding to 135009233 its reverse (332900531), we get a palindrome (467909764).

The spelling of 135009233 in words is "one hundred thirty-five million, nine thousand, two hundred thirty-three".