123323205 has 16 divisors (see below), whose sum is σ = 207702720. Its totient is φ = 62310528.

The previous prime is 123323201. The next prime is 123323227. The reversal of 123323205 is 502323321.

It is not a de Polignac number, because 123323205 - 2² = 123323201 is a prime.

It is a super-2 number, since 2×123323205² = 30417225782944050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123323201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216072 + ... + 216641.

It is an arithmetic number, because the mean of its divisors is an integer number (12981420).

Almost surely, 2^123323205 is an apocalyptic number.

123323205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123323205 is a deficient number, since it is larger than the sum of its proper divisors (84379515).

123323205 is a wasteful number, since it uses less digits than its factorization.

123323205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432740.

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

The square root of 123323205 is about 11105.0981535509. The cubic root of 123323205 is about 497.7542012115.

Adding to 123323205 its reverse (502323321), we get a palindrome (625646526).

The spelling of 123323205 in words is "one hundred twenty-three million, three hundred twenty-three thousand, two hundred five".