123443523 has 12 divisors (see below), whose sum is σ = 203779888. Its totient is φ = 70539120.

The previous prime is 123443483. The next prime is 123443531. The reversal of 123443523 is 325344321.

It is not a de Polignac number, because 123443523 - 2¹⁰ = 123442499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123443533) 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, 979648 + ... + 979773.

Almost surely, 2^123443523 is an apocalyptic number.

123443523 is a deficient number, since it is larger than the sum of its proper divisors (80336365).

123443523 is a wasteful number, since it uses less digits than its factorization.

123443523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959434 (or 1959431 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 123443523 is about 11110.5140745152. The cubic root of 123443523 is about 497.9160234846.

Adding to 123443523 its reverse (325344321), we get a palindrome (448787844).

The spelling of 123443523 in words is "one hundred twenty-three million, four hundred forty-three thousand, five hundred twenty-three".