123211243 has 8 divisors (see below), whose sum is σ = 124905312. Its totient is φ = 121526016.

The previous prime is 123211241. The next prime is 123211247. The reversal of 123211243 is 342112321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 123211243 - 2¹ = 123211241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123211243.

It is not an unprimeable number, because it can be changed into a prime (123211241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28746 + ... + 32752.

It is an arithmetic number, because the mean of its divisors is an integer number (15613164).

Almost surely, 2^123211243 is an apocalyptic number.

123211243 is a deficient number, since it is larger than the sum of its proper divisors (1694069).

123211243 is an equidigital number, since it uses as much as digits as its factorization.

123211243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421.

The product of its digits is 288, while the sum is 19.

The square root of 123211243 is about 11100.0559908498. The cubic root of 123211243 is about 497.6035228118.

Adding to 123211243 its reverse (342112321), we get a palindrome (465323564).

The spelling of 123211243 in words is "one hundred twenty-three million, two hundred eleven thousand, two hundred forty-three".