123213606 has 8 divisors (see below), whose sum is σ = 246427224. Its totient is φ = 41071200.

The previous prime is 123213593. The next prime is 123213611. The reversal of 123213606 is 606312321.

It is a happy number.

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

123213606 is an admirable number.

It is a Curzon number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 10267795 + ... + 10267806.

It is an arithmetic number, because the mean of its divisors is an integer number (30803403).

Almost surely, 2^123213606 is an apocalyptic number.

123213606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123213606 is a wasteful number, since it uses less digits than its factorization.

123213606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20535606.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 123213606 is about 11100.1624312440. The cubic root of 123213606 is about 497.6067038787.

Adding to 123213606 its reverse (606312321), we get a palindrome (729525927).

The spelling of 123213606 in words is "one hundred twenty-three million, two hundred thirteen thousand, six hundred six".