340506835397 has 2 divisors, whose sum is σ = 340506835398. Its totient is φ = 340506835396.

The previous prime is 340506835379. The next prime is 340506835541. The reversal of 340506835397 is 793538605043.

Together with previous prime (340506835379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335141419396 + 5365416001 = 578914^2 + 73249^2 .

It is a cyclic number.

It is not a de Polignac number, because 340506835397 - 2¹⁰ = 340506834373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340506835997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170253417698 + 170253417699.

It is an arithmetic number, because the mean of its divisors is an integer number (170253417699).

Almost surely, 2^340506835397 is an apocalyptic number.

It is an amenable number.

340506835397 is a deficient number, since it is larger than the sum of its proper divisors (1).

340506835397 is an equidigital number, since it uses as much as digits as its factorization.

340506835397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8164800, while the sum is 53.

The spelling of 340506835397 in words is "three hundred forty billion, five hundred six million, eight hundred thirty-five thousand, three hundred ninety-seven".