340230409 has 2 divisors, whose sum is σ = 340230410. Its totient is φ = 340230408.

The previous prime is 340230383. The next prime is 340230419. The reversal of 340230409 is 904032043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228463225 + 111767184 = 15115^2 + 10572^2 .

It is a cyclic number.

It is not a de Polignac number, because 340230409 - 2²³ = 331841801 is a prime.

It is not a weakly prime, because it can be changed into another prime (340230419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170115204 + 170115205.

It is an arithmetic number, because the mean of its divisors is an integer number (170115205).

Almost surely, 2^340230409 is an apocalyptic number.

It is an amenable number.

340230409 is a deficient number, since it is larger than the sum of its proper divisors (1).

340230409 is an equidigital number, since it uses as much as digits as its factorization.

340230409 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 25.

The square root of 340230409 is about 18445.3356976771. The cubic root of 340230409 is about 698.1108305605.

The spelling of 340230409 in words is "three hundred forty million, two hundred thirty thousand, four hundred nine".