123340534311 has 16 divisors (see below), whose sum is σ = 173412736640. Its totient is φ = 77762838240.

The previous prime is 123340534283. The next prime is 123340534313. The reversal of 123340534311 is 113435043321.

It is a happy number.

It is not a de Polignac number, because 123340534311 - 2¹⁰ = 123340533287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123340534313) 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, 1862260 + ... + 1927353.

It is an arithmetic number, because the mean of its divisors is an integer number (10838296040).

Almost surely, 2^123340534311 is an apocalyptic number.

123340534311 is a deficient number, since it is larger than the sum of its proper divisors (50072202329).

123340534311 is a wasteful number, since it uses less digits than its factorization.

123340534311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3790206.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 123340534311 its reverse (113435043321), we get a palindrome (236775577632).

The spelling of 123340534311 in words is "one hundred twenty-three billion, three hundred forty million, five hundred thirty-four thousand, three hundred eleven".