340311403 has 2 divisors, whose sum is σ = 340311404. Its totient is φ = 340311402.

The previous prime is 340311401. The next prime is 340311509. The reversal of 340311403 is 304113043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340311403 - 2¹ = 340311401 is a prime.

Together with 340311401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (340311401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170155701 + 170155702.

It is an arithmetic number, because the mean of its divisors is an integer number (170155702).

Almost surely, 2^340311403 is an apocalyptic number.

340311403 is a deficient number, since it is larger than the sum of its proper divisors (1).

340311403 is an equidigital number, since it uses as much as digits as its factorization.

340311403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 340311403 is about 18447.5310814212. The cubic root of 340311403 is about 698.1662227309.

Adding to 340311403 its reverse (304113043), we get a palindrome (644424446).

The spelling of 340311403 in words is "three hundred forty million, three hundred eleven thousand, four hundred three".