340210243 has 4 divisors (see below), whose sum is σ = 344032920. Its totient is φ = 336387568.

The previous prime is 340210231. The next prime is 340210253. The reversal of 340210243 is 342012043.

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 340210243 - 2⁹ = 340209731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340210243.

It is not an unprimeable number, because it can be changed into a prime (340210253) 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, 1911205 + ... + 1911382.

It is an arithmetic number, because the mean of its divisors is an integer number (86008230).

Almost surely, 2^340210243 is an apocalyptic number.

340210243 is a deficient number, since it is larger than the sum of its proper divisors (3822677).

340210243 is an equidigital number, since it uses as much as digits as its factorization.

340210243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822676.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 340210243 is about 18444.7890473163. The cubic root of 340210243 is about 698.0970375732.

Adding to 340210243 its reverse (342012043), we get a palindrome (682222286).

The spelling of 340210243 in words is "three hundred forty million, two hundred ten thousand, two hundred forty-three".