344128323138 has 32 divisors (see below), whose sum is σ = 718217597952. Its totient is φ = 109716459600.

The previous prime is 344128323127. The next prime is 344128323139. The reversal of 344128323138 is 831323821443.

It is a self number, because there is not a number n which added to its sum of digits gives 344128323138.

It is not an unprimeable number, because it can be changed into a prime (344128323139) 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 15 ways as a sum of consecutive naturals, for example, 3272803 + ... + 3376313.

It is an arithmetic number, because the mean of its divisors is an integer number (22444299936).

Almost surely, 2^344128323138 is an apocalyptic number.

344128323138 is an abundant number, since it is smaller than the sum of its proper divisors (374089274814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

344128323138 is a wasteful number, since it uses less digits than its factorization.

344128323138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127630.

The product of its digits is 331776, while the sum is 42.

The spelling of 344128323138 in words is "three hundred forty-four billion, one hundred twenty-eight million, three hundred twenty-three thousand, one hundred thirty-eight".