123223131213 has 16 divisors (see below), whose sum is σ = 202212318336. Its totient is φ = 64996816320.

The previous prime is 123223131169. The next prime is 123223131247. The reversal of 123223131213 is 312131322321.

It is not a de Polignac number, because 123223131213 - 2¹⁰ = 123223130189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123223131113) 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, 225683118 + ... + 225683663.

It is an arithmetic number, because the mean of its divisors is an integer number (12638269896).

Almost surely, 2^123223131213 is an apocalyptic number.

123223131213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123223131213 is a deficient number, since it is larger than the sum of its proper divisors (78989187123).

123223131213 is a wasteful number, since it uses less digits than its factorization.

123223131213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451366804.

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

Adding to 123223131213 its reverse (312131322321), we get a palindrome (435354453534).

The spelling of 123223131213 in words is "one hundred twenty-three billion, two hundred twenty-three million, one hundred thirty-one thousand, two hundred thirteen".