338743243 has 4 divisors (see below), whose sum is σ = 338798880. Its totient is φ = 338687608.

The previous prime is 338743217. The next prime is 338743253. The reversal of 338743243 is 342347833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342347833 = 19 ⋅18018307.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338743243 is a prime.

It is a super-2 number, since 2×338743243² = 229493969356314098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338743213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17380 + ... + 31297.

It is an arithmetic number, because the mean of its divisors is an integer number (84699720).

Almost surely, 2^338743243 is an apocalyptic number.

338743243 is a deficient number, since it is larger than the sum of its proper divisors (55637).

338743243 is an equidigital number, since it uses as much as digits as its factorization.

338743243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55636.

The product of its digits is 145152, while the sum is 37.

The square root of 338743243 is about 18404.9787557606. The cubic root of 338743243 is about 697.0921845347.

The spelling of 338743243 in words is "three hundred thirty-eight million, seven hundred forty-three thousand, two hundred forty-three".