340000243 has 4 divisors (see below), whose sum is σ = 370909368. Its totient is φ = 309091120.

The previous prime is 340000217. The next prime is 340000253. The reversal of 340000243 is 342000043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 340000243 - 2⁵ = 340000211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340000253) 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, 15454546 + ... + 15454567.

It is an arithmetic number, because the mean of its divisors is an integer number (92727342).

Almost surely, 2^340000243 is an apocalyptic number.

340000243 is a deficient number, since it is larger than the sum of its proper divisors (30909125).

340000243 is a wasteful number, since it uses less digits than its factorization.

340000243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30909124.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 340000243 is about 18439.0955038473. The cubic root of 340000243 is about 697.9533709679.

Adding to 340000243 its reverse (342000043), we get a palindrome (682000286).

The spelling of 340000243 in words is "three hundred forty million, two hundred forty-three", and thus it is an aban number.