12403001003 has 2 divisors, whose sum is σ = 12403001004. Its totient is φ = 12403001002.

The previous prime is 12403000847. The next prime is 12403001021. The reversal of 12403001003 is 30010030421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12403001003 - 2²⁰ = 12401952427 is a prime.

It is not a weakly prime, because it can be changed into another prime (12403001803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6201500501 + 6201500502.

It is an arithmetic number, because the mean of its divisors is an integer number (6201500502).

Almost surely, 2^12403001003 is an apocalyptic number.

12403001003 is a deficient number, since it is larger than the sum of its proper divisors (1).

12403001003 is an equidigital number, since it uses as much as digits as its factorization.

12403001003 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 14.

Adding to 12403001003 its reverse (30010030421), we get a palindrome (42413031424).

The spelling of 12403001003 in words is "twelve billion, four hundred three million, one thousand, three".