340333403 has 2 divisors, whose sum is σ = 340333404. Its totient is φ = 340333402.

The previous prime is 340333391. The next prime is 340333429. The reversal of 340333403 is 304333043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340333403 - 2¹⁶ = 340267867 is a prime.

It is not a weakly prime, because it can be changed into another prime (340333493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170166701 + 170166702.

It is an arithmetic number, because the mean of its divisors is an integer number (170166702).

Almost surely, 2^340333403 is an apocalyptic number.

340333403 is a deficient number, since it is larger than the sum of its proper divisors (1).

340333403 is an equidigital number, since it uses as much as digits as its factorization.

340333403 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 340333403 is about 18448.1273575396. The cubic root of 340333403 is about 698.1812671146.

Adding to 340333403 its reverse (304333043), we get a palindrome (644666446).

The spelling of 340333403 in words is "three hundred forty million, three hundred thirty-three thousand, four hundred three".