344200138 has 4 divisors (see below), whose sum is σ = 516300210. Its totient is φ = 172100068.

The previous prime is 344200133. The next prime is 344200141. The reversal of 344200138 is 831002443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831002443 = 23 ⋅36130541.

It can be written as a sum of positive squares in only one way, i.e., 242331489 + 101868649 = 15567^2 + 10093^2 .

It is not an unprimeable number, because it can be changed into a prime (344200133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86050033 + ... + 86050036.

Almost surely, 2^344200138 is an apocalyptic number.

344200138 is a deficient number, since it is larger than the sum of its proper divisors (172100072).

344200138 is a wasteful number, since it uses less digits than its factorization.

344200138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172100071.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 344200138 is about 18552.6315653602. The cubic root of 344200138 is about 700.8154700515.

The spelling of 344200138 in words is "three hundred forty-four million, two hundred thousand, one hundred thirty-eight".