1340220403387 has 2 divisors, whose sum is σ = 1340220403388. Its totient is φ = 1340220403386.

The previous prime is 1340220403303. The next prime is 1340220403399. The reversal of 1340220403387 is 7833040220431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340220403387 - 2¹⁹ = 1340219879099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340220403087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670110201693 + 670110201694.

It is an arithmetic number, because the mean of its divisors is an integer number (670110201694).

Almost surely, 2^{1340220403387} is an apocalyptic number.

1340220403387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340220403387 is an equidigital number, since it uses as much as digits as its factorization.

1340220403387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 37.

The spelling of 1340220403387 in words is "one trillion, three hundred forty billion, two hundred twenty million, four hundred three thousand, three hundred eighty-seven".