123213004243 has 48 divisors (see below), whose sum is σ = 158549405184. Its totient is φ = 94962658560.

The previous prime is 123213004223. The next prime is 123213004253. The reversal of 123213004243 is 342400312321.

It is not a de Polignac number, because 123213004243 - 2²¹ = 123210907091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123213004223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18140178 + ... + 18146968.

It is an arithmetic number, because the mean of its divisors is an integer number (3303112608).

Almost surely, 2^123213004243 is an apocalyptic number.

123213004243 is a deficient number, since it is larger than the sum of its proper divisors (35336400941).

123213004243 is a wasteful number, since it uses less digits than its factorization.

123213004243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7792 (or 7785 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 123213004243 its reverse (342400312321), we get a palindrome (465613316564).

The spelling of 123213004243 in words is "one hundred twenty-three billion, two hundred thirteen million, four thousand, two hundred forty-three".