123340534312 has 16 divisors (see below), whose sum is σ = 231581619360. Its totient is φ = 61585435824.

The previous prime is 123340534283. The next prime is 123340534313. The reversal of 123340534312 is 213435043321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123340534313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10597738 + ... + 10609369.

It is an arithmetic number, because the mean of its divisors is an integer number (14473851210).

Almost surely, 2^123340534312 is an apocalyptic number.

It is an amenable number.

123340534312 is a deficient number, since it is larger than the sum of its proper divisors (108241085048).

123340534312 is a wasteful number, since it uses less digits than its factorization.

123340534312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21207840 (or 21207836 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 123340534312 its reverse (213435043321), we get a palindrome (336775577633).

The spelling of 123340534312 in words is "one hundred twenty-three billion, three hundred forty million, five hundred thirty-four thousand, three hundred twelve".