123344513111 has 6 divisors (see below), whose sum is σ = 123596477136. Its totient is φ = 123093061700.

The previous prime is 123344513099. The next prime is 123344513191. The reversal of 123344513111 is 111315443321.

It is not a de Polignac number, because 123344513111 - 2²⁶ = 123277404247 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 (123344513191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14735 + ... + 496896.

It is an arithmetic number, because the mean of its divisors is an integer number (20599412856).

Almost surely, 2^123344513111 is an apocalyptic number.

123344513111 is a deficient number, since it is larger than the sum of its proper divisors (251964025).

123344513111 is an frugal number, since it uses more digits than its factorization.

123344513111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512613 (or 512122 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

Adding to 123344513111 its reverse (111315443321), we get a palindrome (234659956432).

The spelling of 123344513111 in words is "one hundred twenty-three billion, three hundred forty-four million, five hundred thirteen thousand, one hundred eleven".