123340311 has 6 divisors (see below), whose sum is σ = 178158240. Its totient is φ = 82226868.

The previous prime is 123340271. The next prime is 123340313. The reversal of 123340311 is 113043321.

123340311 is a `hidden beast` number, since 12 + 3 + 340 + 311 = 666.

It is not a de Polignac number, because 123340311 - 2⁷ = 123340183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123340313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6852231 + ... + 6852248.

It is an arithmetic number, because the mean of its divisors is an integer number (29693040).

Almost surely, 2^123340311 is an apocalyptic number.

123340311 is a deficient number, since it is larger than the sum of its proper divisors (54817929).

123340311 is a wasteful number, since it uses less digits than its factorization.

123340311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13704485 (or 13704482 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 123340311 is about 11105.8683136439. The cubic root of 123340311 is about 497.7772144250. Note that the first 3 decimals are identical.

Adding to 123340311 its reverse (113043321), we get a palindrome (236383632).

The spelling of 123340311 in words is "one hundred twenty-three million, three hundred forty thousand, three hundred eleven".