123343431121 has 8 divisors (see below), whose sum is σ = 125424972288. Its totient is φ = 121263810000.

The previous prime is 123343431119. The next prime is 123343431143. The reversal of 123343431121 is 121134343321.

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 123343431121 - 2¹ = 123343431119 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 123343431121.

It is not an unprimeable number, because it can be changed into a prime (123343431721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350155 + ... + 607696.

It is an arithmetic number, because the mean of its divisors is an integer number (15678121536).

Almost surely, 2^123343431121 is an apocalyptic number.

It is an amenable number.

123343431121 is a deficient number, since it is larger than the sum of its proper divisors (2081541167).

123343431121 is an equidigital number, since it uses as much as digits as its factorization.

123343431121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960023.

The product of its digits is 5184, while the sum is 28.

Adding to 123343431121 its reverse (121134343321), we get a palindrome (244477774442).

The spelling of 123343431121 in words is "one hundred twenty-three billion, three hundred forty-three million, four hundred thirty-one thousand, one hundred twenty-one".