5123133423 has 12 divisors (see below), whose sum is σ = 7417664488. Its totient is φ = 3407307120.

The previous prime is 5123133349. The next prime is 5123133437. The reversal of 5123133423 is 3243313215.

5123133423 is a `hidden beast` number, since 5 + 1 + 2 + 313 + 342 + 3 = 666.

It is not a de Polignac number, because 5123133423 - 2¹⁸ = 5122871279 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 (5123133443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672265 + ... + 679842.

Almost surely, 2^5123133423 is an apocalyptic number.

5123133423 is a deficient number, since it is larger than the sum of its proper divisors (2294531065).

5123133423 is a wasteful number, since it uses less digits than its factorization.

5123133423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352534 (or 1352531 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 5123133423 is about 71576.0673898755. The cubic root of 5123133423 is about 1723.8992821573.

Adding to 5123133423 its reverse (3243313215), we get a palindrome (8366446638).

The spelling of 5123133423 in words is "five billion, one hundred twenty-three million, one hundred thirty-three thousand, four hundred twenty-three".