12523135 has 8 divisors (see below), whose sum is σ = 15911856. Its totient is φ = 9429120.

The previous prime is 12523129. The next prime is 12523139. The reversal of 12523135 is 53132521.

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

It is not a de Polignac number, because 12523135 - 2¹¹ = 12521087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12523139) 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 7 ways as a sum of consecutive naturals, for example, 73581 + ... + 73750.

It is an arithmetic number, because the mean of its divisors is an integer number (1988982).

Almost surely, 2^12523135 is an apocalyptic number.

12523135 is a deficient number, since it is larger than the sum of its proper divisors (3388721).

12523135 is a wasteful number, since it uses less digits than its factorization.

12523135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147353.

The product of its digits is 900, while the sum is 22.

The square root of 12523135 is about 3538.8041765546. The cubic root of 12523135 is about 232.2225309839. Note that the first 3 decimals are identical.

Adding to 12523135 its reverse (53132521), we get a palindrome (65655656).

The spelling of 12523135 in words is "twelve million, five hundred twenty-three thousand, one hundred thirty-five".