340440307 has 2 divisors, whose sum is σ = 340440308. Its totient is φ = 340440306.

The previous prime is 340440301. The next prime is 340440313. The reversal of 340440307 is 703044043.

It is a balanced prime because it is at equal distance from previous prime (340440301) and next prime (340440313).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340440307 is a prime.

It is not a weakly prime, because it can be changed into another prime (340440301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170220153 + 170220154.

It is an arithmetic number, because the mean of its divisors is an integer number (170220154).

Almost surely, 2^340440307 is an apocalyptic number.

340440307 is a deficient number, since it is larger than the sum of its proper divisors (1).

340440307 is an equidigital number, since it uses as much as digits as its factorization.

340440307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 340440307 is about 18451.0245514985. The cubic root of 340440307 is about 698.2543626496.

The spelling of 340440307 in words is "three hundred forty million, four hundred forty thousand, three hundred seven".