1340203103 has 4 divisors (see below), whose sum is σ = 1365490008. Its totient is φ = 1314916200.

The previous prime is 1340203079. The next prime is 1340203157. The reversal of 1340203103 is 3013020431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340203103 is a prime.

It is a super-2 number, since 2×1340203103² = 3592288714581657218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340203903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12643373 + ... + 12643478.

It is an arithmetic number, because the mean of its divisors is an integer number (341372502).

Almost surely, 2^1340203103 is an apocalyptic number.

1340203103 is a deficient number, since it is larger than the sum of its proper divisors (25286905).

1340203103 is an equidigital number, since it uses as much as digits as its factorization.

1340203103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25286904.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1340203103 is about 36608.7845059079. The cubic root of 1340203103 is about 1102.5294690663.

Adding to 1340203103 its reverse (3013020431), we get a palindrome (4353223534).

The spelling of 1340203103 in words is "one billion, three hundred forty million, two hundred three thousand, one hundred three".