123203212 has 12 divisors (see below), whose sum is σ = 235206216. Its totient is φ = 56001440.

The previous prime is 123203189. The next prime is 123203219. The reversal of 123203212 is 212302321.

It is not an unprimeable number, because it can be changed into a prime (123203219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1399993 + ... + 1400080.

It is an arithmetic number, because the mean of its divisors is an integer number (19600518).

Almost surely, 2^123203212 is an apocalyptic number.

It is an amenable number.

123203212 is a deficient number, since it is larger than the sum of its proper divisors (112003004).

123203212 is a wasteful number, since it uses less digits than its factorization.

123203212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800088 (or 2800086 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 123203212 is about 11099.6942300227. The cubic root of 123203212 is about 497.5927111883.

Adding to 123203212 its reverse (212302321), we get a palindrome (335505533).

The spelling of 123203212 in words is "one hundred twenty-three million, two hundred three thousand, two hundred twelve".