123323113405 has 4 divisors (see below), whose sum is σ = 147987736092. Its totient is φ = 98658490720.

The previous prime is 123323113373. The next prime is 123323113409. The reversal of 123323113405 is 504311323321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504311323321 = 13 ⋅38793178717.

It can be written as a sum of positive squares in 2 ways, for example, as 88077181284 + 35245932121 = 296778^2 + 187739^2 .

It is not a de Polignac number, because 123323113405 - 2⁵ = 123323113373 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 (123323113409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12332311336 + ... + 12332311345.

It is an arithmetic number, because the mean of its divisors is an integer number (36996934023).

Almost surely, 2^123323113405 is an apocalyptic number.

It is an amenable number.

123323113405 is a deficient number, since it is larger than the sum of its proper divisors (24664622687).

123323113405 is an equidigital number, since it uses as much as digits as its factorization.

123323113405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24664622686.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 123323113405 its reverse (504311323321), we get a palindrome (627634436726).

The spelling of 123323113405 in words is "one hundred twenty-three billion, three hundred twenty-three million, one hundred thirteen thousand, four hundred five".