123505223 has 4 divisors (see below), whose sum is σ = 126843240. Its totient is φ = 120167208.

The previous prime is 123505201. The next prime is 123505247. The reversal of 123505223 is 322505321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123505223 - 2¹² = 123501127 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 (123505273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1668953 + ... + 1669026.

It is an arithmetic number, because the mean of its divisors is an integer number (31710810).

Almost surely, 2^123505223 is an apocalyptic number.

123505223 is a deficient number, since it is larger than the sum of its proper divisors (3338017).

123505223 is an equidigital number, since it uses as much as digits as its factorization.

123505223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338016.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 123505223 is about 11113.2903768416. The cubic root of 123505223 is about 497.9989664124.

The spelling of 123505223 in words is "one hundred twenty-three million, five hundred five thousand, two hundred twenty-three".