1340312203 has 2 divisors, whose sum is σ = 1340312204. Its totient is φ = 1340312202.

The previous prime is 1340312201. The next prime is 1340312209. The reversal of 1340312203 is 3022130431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1340312203 - 2¹ = 1340312201 is a prime.

Together with 1340312201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1340312201) 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, 670156101 + 670156102.

It is an arithmetic number, because the mean of its divisors is an integer number (670156102).

Almost surely, 2^1340312203 is an apocalyptic number.

1340312203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340312203 is an equidigital number, since it uses as much as digits as its factorization.

1340312203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1340312203 is about 36610.2745551027. The cubic root of 1340312203 is about 1102.5593856018.

Adding to 1340312203 its reverse (3022130431), we get a palindrome (4362442634).

The spelling of 1340312203 in words is "one billion, three hundred forty million, three hundred twelve thousand, two hundred three".