135210323 has 4 divisors (see below), whose sum is σ = 135331848. Its totient is φ = 135088800.

The previous prime is 135210319. The next prime is 135210329. The reversal of 135210323 is 323012531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323012531 = 1367 ⋅236293.

It is a cyclic number.

It is not a de Polignac number, because 135210323 - 2² = 135210319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135210295 and 135210304.

It is not an unprimeable number, because it can be changed into a prime (135210329) 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, 59078 + ... + 61323.

It is an arithmetic number, because the mean of its divisors is an integer number (33832962).

Almost surely, 2^135210323 is an apocalyptic number.

135210323 is a deficient number, since it is larger than the sum of its proper divisors (121525).

135210323 is a wasteful number, since it uses less digits than its factorization.

135210323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121524.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 135210323 is about 11627.9973770207. The cubic root of 135210323 is about 513.2590511600.

Adding to 135210323 its reverse (323012531), we get a palindrome (458222854).

The spelling of 135210323 in words is "one hundred thirty-five million, two hundred ten thousand, three hundred twenty-three".