12400303 has 2 divisors, whose sum is σ = 12400304. Its totient is φ = 12400302.

The previous prime is 12400247. The next prime is 12400309. The reversal of 12400303 is 30300421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12400303 - 2¹³ = 12392111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12400309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200151 + 6200152.

It is an arithmetic number, because the mean of its divisors is an integer number (6200152).

Almost surely, 2^12400303 is an apocalyptic number.

12400303 is a deficient number, since it is larger than the sum of its proper divisors (1).

12400303 is an equidigital number, since it uses as much as digits as its factorization.

12400303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 12400303 is about 3521.4063951779. The cubic root of 12400303 is about 231.4607907073.

Adding to 12400303 its reverse (30300421), we get a palindrome (42700724).

The spelling of 12400303 in words is "twelve million, four hundred thousand, three hundred three".