340034243 has 4 divisors (see below), whose sum is σ = 340293360. Its totient is φ = 339775128.

The previous prime is 340034207. The next prime is 340034263. The reversal of 340034243 is 342430043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342430043 = 179 ⋅1913017.

It is a cyclic number.

It is not a de Polignac number, because 340034243 - 2⁸ = 340033987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340034263) 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, 127580 + ... + 130217.

It is an arithmetic number, because the mean of its divisors is an integer number (85073340).

Almost surely, 2^340034243 is an apocalyptic number.

340034243 is a deficient number, since it is larger than the sum of its proper divisors (259117).

340034243 is a wasteful number, since it uses less digits than its factorization.

340034243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259116.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 340034243 is about 18440.0174349158. The cubic root of 340034243 is about 697.9766352882.

Adding to 340034243 its reverse (342430043), we get a palindrome (682464286).

The spelling of 340034243 in words is "three hundred forty million, thirty-four thousand, two hundred forty-three".