123223305 has 16 divisors (see below), whose sum is σ = 205729920. Its totient is φ = 62861568.

The previous prime is 123223267. The next prime is 123223313. The reversal of 123223305 is 503322321.

It is not a de Polignac number, because 123223305 - 2²⁰ = 122174729 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 178240 + ... + 178929.

It is an arithmetic number, because the mean of its divisors is an integer number (12858120).

Almost surely, 2^123223305 is an apocalyptic number.

123223305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123223305 is a deficient number, since it is larger than the sum of its proper divisors (82506615).

123223305 is a wasteful number, since it uses less digits than its factorization.

123223305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357200.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 123223305 is about 11100.5993081455. The cubic root of 123223305 is about 497.6197602311.

Adding to 123223305 its reverse (503322321), we get a palindrome (626545626).

The spelling of 123223305 in words is "one hundred twenty-three million, two hundred twenty-three thousand, three hundred five".