340243303 has 2 divisors, whose sum is σ = 340243304. Its totient is φ = 340243302.

The previous prime is 340243273. The next prime is 340243313. The reversal of 340243303 is 303342043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340243303 - 2¹³ = 340235111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340243313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170121651 + 170121652.

It is an arithmetic number, because the mean of its divisors is an integer number (170121652).

Almost surely, 2^340243303 is an apocalyptic number.

340243303 is a deficient number, since it is larger than the sum of its proper divisors (1).

340243303 is an equidigital number, since it uses as much as digits as its factorization.

340243303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 22.

The square root of 340243303 is about 18445.6852136211. The cubic root of 340243303 is about 698.1196494149.

Adding to 340243303 its reverse (303342043), we get a palindrome (643585346).

The spelling of 340243303 in words is "three hundred forty million, two hundred forty-three thousand, three hundred three".