123135323 has 4 divisors (see below), whose sum is σ = 123205128. Its totient is φ = 123065520.

The previous prime is 123135319. The next prime is 123135349. The reversal of 123135323 is 323531321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323531321 = 13063 ⋅24767.

It is a cyclic number.

It is not a de Polignac number, because 123135323 - 2² = 123135319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123135373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32186 + ... + 35807.

It is an arithmetic number, because the mean of its divisors is an integer number (30801282).

Almost surely, 2^123135323 is an apocalyptic number.

123135323 is a deficient number, since it is larger than the sum of its proper divisors (69805).

123135323 is an equidigital number, since it uses as much as digits as its factorization.

123135323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69804.

The product of its digits is 1620, while the sum is 23.

The square root of 123135323 is about 11096.6356613165. The cubic root of 123135323 is about 497.5012977753.

Adding to 123135323 its reverse (323531321), we get a palindrome (446666644).

The spelling of 123135323 in words is "one hundred twenty-three million, one hundred thirty-five thousand, three hundred twenty-three".