1340320034423 has 2 divisors, whose sum is σ = 1340320034424. Its totient is φ = 1340320034422.

The previous prime is 1340320034381. The next prime is 1340320034453. The reversal of 1340320034423 is 3244300230431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340320034423 - 2¹⁰ = 1340320033399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340320034453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670160017211 + 670160017212.

It is an arithmetic number, because the mean of its divisors is an integer number (670160017212).

Almost surely, 2^{1340320034423} is an apocalyptic number.

1340320034423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340320034423 is an equidigital number, since it uses as much as digits as its factorization.

1340320034423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 1340320034423 its reverse (3244300230431), we get a palindrome (4584620264854).

The spelling of 1340320034423 in words is "one trillion, three hundred forty billion, three hundred twenty million, thirty-four thousand, four hundred twenty-three".