1340404303 has 12 divisors (see below), whose sum is σ = 1558323280. Its totient is φ = 1129424256.

The previous prime is 1340404271. The next prime is 1340404309. The reversal of 1340404303 is 3034040431.

It is not a de Polignac number, because 1340404303 - 2⁵ = 1340404271 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 (1340404309) 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 11 ways as a sum of consecutive naturals, for example, 3138 + ... + 51871.

Almost surely, 2^1340404303 is an apocalyptic number.

1340404303 is a deficient number, since it is larger than the sum of its proper divisors (217918977).

1340404303 is an frugal number, since it uses more digits than its factorization.

1340404303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55134 (or 55075 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 1340404303 is about 36611.5323771076. The cubic root of 1340404303 is about 1102.5846392686.

Adding to 1340404303 its reverse (3034040431), we get a palindrome (4374444734).

The spelling of 1340404303 in words is "one billion, three hundred forty million, four hundred four thousand, three hundred three".