123243342321 has 16 divisors (see below), whose sum is σ = 182201784768. Its totient is φ = 73468459200.

The previous prime is 123243342289. The next prime is 123243342329.

It is a happy number.

123243342321 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 123243342321 - 2⁵ = 123243342289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123243342329) 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, 30609846 + ... + 30613871.

It is an arithmetic number, because the mean of its divisors is an integer number (11387611548).

Almost surely, 2^123243342321 is an apocalyptic number.

123243342321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123243342321 is a deficient number, since it is larger than the sum of its proper divisors (58958442447).

123243342321 is a wasteful number, since it uses less digits than its factorization.

123243342321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61223792.

The product of its digits is 20736, while the sum is 30.

It can be divided in two parts, 123243 and 342321, that added together give a palindrome (465564).

The spelling of 123243342321 in words is "one hundred twenty-three billion, two hundred forty-three million, three hundred forty-two thousand, three hundred twenty-one".