135215233 has 8 divisors (see below), whose sum is σ = 136155240. Its totient is φ = 134279040.

The previous prime is 135215231. The next prime is 135215237. The reversal of 135215233 is 332512531.

It can be written as a sum of positive squares in 4 ways, for example, as 28547649 + 106667584 = 5343^2 + 10328^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 135215233 - 2¹ = 135215231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135215198 and 135215207.

It is not an unprimeable number, because it can be changed into a prime (135215231) 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, 108691 + ... + 109927.

It is an arithmetic number, because the mean of its divisors is an integer number (17019405).

Almost surely, 2^135215233 is an apocalyptic number.

It is an amenable number.

135215233 is a deficient number, since it is larger than the sum of its proper divisors (940007).

135215233 is a wasteful number, since it uses less digits than its factorization.

135215233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907.

The product of its digits is 2700, while the sum is 25.

The square root of 135215233 is about 11628.2085034626. The cubic root of 135215233 is about 513.2652638795.

Adding to 135215233 its reverse (332512531), we get a palindrome (467727764).

The spelling of 135215233 in words is "one hundred thirty-five million, two hundred fifteen thousand, two hundred thirty-three".