123243305 has 8 divisors (see below), whose sum is σ = 148110144. Its totient is φ = 98449200.

The previous prime is 123243293. The next prime is 123243313. The reversal of 123243305 is 503342321.

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

It is not a de Polignac number, because 123243305 - 2⁸ = 123243049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14381 + ... + 21290.

It is an arithmetic number, because the mean of its divisors is an integer number (18513768).

Almost surely, 2^123243305 is an apocalyptic number.

It is an amenable number.

123243305 is a deficient number, since it is larger than the sum of its proper divisors (24866839).

123243305 is an equidigital number, since it uses as much as digits as its factorization.

123243305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36367.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 123243305 is about 11101.5001238571. The cubic root of 123243305 is about 497.6466811581.

Adding to 123243305 its reverse (503342321), we get a palindrome (626585626).

The spelling of 123243305 in words is "one hundred twenty-three million, two hundred forty-three thousand, three hundred five".