344400243 has 20 divisors (see below), whose sum is σ = 505181640. Its totient is φ = 208700800.

The previous prime is 344400233. The next prime is 344400247. The reversal of 344400243 is 342004443.

It is a happy number.

It is not a de Polignac number, because 344400243 - 2⁵ = 344400211 is a prime.

It is a super-2 number, since 2×344400243² = 237223054756918098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (344400247) 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 19 ways as a sum of consecutive naturals, for example, 40003 + ... + 47843.

It is an arithmetic number, because the mean of its divisors is an integer number (25259082).

Almost surely, 2^344400243 is an apocalyptic number.

344400243 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

344400243 is a deficient number, since it is larger than the sum of its proper divisors (160781397).

344400243 is an frugal number, since it uses more digits than its factorization.

344400243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7888 (or 7855 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 344400243 is about 18558.0236824938. The cubic root of 344400243 is about 700.9512529840.

Adding to 344400243 its reverse (342004443), we get a palindrome (686404686).

The spelling of 344400243 in words is "three hundred forty-four million, four hundred thousand, two hundred forty-three".