340330433 has 2 divisors, whose sum is σ = 340330434. Its totient is φ = 340330432.

The previous prime is 340330421. The next prime is 340330439. The reversal of 340330433 is 334033043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278990209 + 61340224 = 16703^2 + 7832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340330433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340330399 and 340330408.

It is not a weakly prime, because it can be changed into another prime (340330439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170165216 + 170165217.

It is an arithmetic number, because the mean of its divisors is an integer number (170165217).

Almost surely, 2^340330433 is an apocalyptic number.

It is an amenable number.

340330433 is a deficient number, since it is larger than the sum of its proper divisors (1).

340330433 is an equidigital number, since it uses as much as digits as its factorization.

340330433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 23.

The square root of 340330433 is about 18448.0468613889. The cubic root of 340330433 is about 698.1792361606.

Adding to 340330433 its reverse (334033043), we get a palindrome (674363476).

The spelling of 340330433 in words is "three hundred forty million, three hundred thirty thousand, four hundred thirty-three".