1340814403 has 2 divisors, whose sum is σ = 1340814404. Its totient is φ = 1340814402.

The previous prime is 1340814379. The next prime is 1340814421. The reversal of 1340814403 is 3044180431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340814403 - 2²¹ = 1338717251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340815403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670407201 + 670407202.

It is an arithmetic number, because the mean of its divisors is an integer number (670407202).

Almost surely, 2^1340814403 is an apocalyptic number.

1340814403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340814403 is an equidigital number, since it uses as much as digits as its factorization.

1340814403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 1340814403 is about 36617.1326430675. The cubic root of 1340814403 is about 1102.6970739655.

Adding to 1340814403 its reverse (3044180431), we get a palindrome (4384994834).

The spelling of 1340814403 in words is "one billion, three hundred forty million, eight hundred fourteen thousand, four hundred three".