12340403 has 2 divisors, whose sum is σ = 12340404. Its totient is φ = 12340402.

The previous prime is 12340373. The next prime is 12340409. The reversal of 12340403 is 30404321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12340403 is a prime.

It is not a weakly prime, because it can be changed into another prime (12340409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6170201 + 6170202.

It is an arithmetic number, because the mean of its divisors is an integer number (6170202).

Almost surely, 2^12340403 is an apocalyptic number.

12340403 is a deficient number, since it is larger than the sum of its proper divisors (1).

12340403 is an equidigital number, since it uses as much as digits as its factorization.

12340403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 12340403 is about 3512.8909746817. The cubic root of 12340403 is about 231.0874964486.

Adding to 12340403 its reverse (30404321), we get a palindrome (42744724).

The spelling of 12340403 in words is "twelve million, three hundred forty thousand, four hundred three".