1340305003 has 4 divisors (see below), whose sum is σ = 1343898688. Its totient is φ = 1336711320.

The previous prime is 1340304997. The next prime is 1340305009. The reversal of 1340305003 is 3005030431.

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

It is an interprime number because it is at equal distance from previous prime (1340304997) and next prime (1340305009).

It is a cyclic number.

It is not a de Polignac number, because 1340305003 - 2⁵ = 1340304971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340305009) 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, 1796283 + ... + 1797028.

It is an arithmetic number, because the mean of its divisors is an integer number (335974672).

Almost surely, 2^1340305003 is an apocalyptic number.

1340305003 is a deficient number, since it is larger than the sum of its proper divisors (3593685).

1340305003 is an equidigital number, since it uses as much as digits as its factorization.

1340305003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593684.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 1340305003 is about 36610.1762219195. The cubic root of 1340305003 is about 1102.5574113250.

Adding to 1340305003 its reverse (3005030431), we get a palindrome (4345335434).

The spelling of 1340305003 in words is "one billion, three hundred forty million, three hundred five thousand, three".