135215238 has 16 divisors (see below), whose sum is σ = 271200816. Its totient is φ = 44943360.

The previous prime is 135215237. The next prime is 135215239. The reversal of 135215238 is 832512531.

135215238 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (135215237) and next prime (135215239).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135215231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29803 + ... + 34038.

It is an arithmetic number, because the mean of its divisors is an integer number (16950051).

Almost surely, 2^135215238 is an apocalyptic number.

135215238 is an abundant number, since it is smaller than the sum of its proper divisors (135985578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135215238 is a wasteful number, since it uses less digits than its factorization.

135215238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64199.

The product of its digits is 7200, while the sum is 30.

The square root of 135215238 is about 11628.2087184570. The cubic root of 135215238 is about 513.2652702060.

Adding to 135215238 its reverse (832512531), we get a palindrome (967727769).

It can be divided in two parts, 1352152 and 38, that added together give a triangular number (1352190 = T₁₆₄₄).

The spelling of 135215238 in words is "one hundred thirty-five million, two hundred fifteen thousand, two hundred thirty-eight".