1340140303409 has 2 divisors, whose sum is σ = 1340140303410. Its totient is φ = 1340140303408.

The previous prime is 1340140303393. The next prime is 1340140303423. The reversal of 1340140303409 is 9043030410431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 691999378225 + 648140925184 = 831865^2 + 805072^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340140303409 - 2⁴ = 1340140303393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340140333409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670070151704 + 670070151705.

It is an arithmetic number, because the mean of its divisors is an integer number (670070151705).

Almost surely, 2^{1340140303409} is an apocalyptic number.

It is an amenable number.

1340140303409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340140303409 is an equidigital number, since it uses as much as digits as its factorization.

1340140303409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 1340140303409 in words is "one trillion, three hundred forty billion, one hundred forty million, three hundred three thousand, four hundred nine".