340121071391 has 2 divisors, whose sum is σ = 340121071392. Its totient is φ = 340121071390.

The previous prime is 340121071369. The next prime is 340121071453. The reversal of 340121071391 is 193170121043.

It is a weak prime.

It is an emirp because it is prime and its reverse (193170121043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340121071391 - 2¹⁸ = 340120809247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340121071691) 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, 170060535695 + 170060535696.

It is an arithmetic number, because the mean of its divisors is an integer number (170060535696).

Almost surely, 2^340121071391 is an apocalyptic number.

340121071391 is a deficient number, since it is larger than the sum of its proper divisors (1).

340121071391 is an equidigital number, since it uses as much as digits as its factorization.

340121071391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 340121071391 in words is "three hundred forty billion, one hundred twenty-one million, seventy-one thousand, three hundred ninety-one".