1340433503 has 4 divisors (see below), whose sum is σ = 1340506728. Its totient is φ = 1340360280.

The previous prime is 1340433487. The next prime is 1340433509. The reversal of 1340433503 is 3053340431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1340433503 - 2⁴ = 1340433487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340433509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18200 + ... + 54882.

It is an arithmetic number, because the mean of its divisors is an integer number (335126682).

Almost surely, 2^1340433503 is an apocalyptic number.

1340433503 is a deficient number, since it is larger than the sum of its proper divisors (73225).

1340433503 is an equidigital number, since it uses as much as digits as its factorization.

1340433503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73224.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 1340433503 is about 36611.9311563867. The cubic root of 1340433503 is about 1102.5926456186.

Adding to 1340433503 its reverse (3053340431), we get a palindrome (4393773934).

The spelling of 1340433503 in words is "one billion, three hundred forty million, four hundred thirty-three thousand, five hundred three".