123204323523 has 8 divisors (see below), whose sum is σ = 164321939200. Its totient is φ = 82111461768.

The previous prime is 123204323513. The next prime is 123204323569. The reversal of 123204323523 is 325323402321.

It is a happy number.

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

It is not a de Polignac number, because 123204323523 - 2¹⁰ = 123204322499 is a prime.

It is a super-2 number, since 2×123204323523² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123204323513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6176863 + ... + 6196776.

It is an arithmetic number, because the mean of its divisors is an integer number (20540242400).

Almost surely, 2^123204323523 is an apocalyptic number.

123204323523 is a deficient number, since it is larger than the sum of its proper divisors (41117615677).

123204323523 is a wasteful number, since it uses less digits than its factorization.

123204323523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12376961.

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 123204323523 its reverse (325323402321), we get a palindrome (448527725844).

The spelling of 123204323523 in words is "one hundred twenty-three billion, two hundred four million, three hundred twenty-three thousand, five hundred twenty-three".