12305240403 has 4 divisors (see below), whose sum is σ = 16406987208. Its totient is φ = 8203493600.

The previous prime is 12305240399. The next prime is 12305240413. The reversal of 12305240403 is 30404250321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12305240403 - 2² = 12305240399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12305240413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2050873398 + ... + 2050873403.

It is an arithmetic number, because the mean of its divisors is an integer number (4101746802).

Almost surely, 2^12305240403 is an apocalyptic number.

12305240403 is a deficient number, since it is larger than the sum of its proper divisors (4101746805).

12305240403 is an equidigital number, since it uses as much as digits as its factorization.

12305240403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101746804.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 12305240403 its reverse (30404250321), we get a palindrome (42709490724).

The spelling of 12305240403 in words is "twelve billion, three hundred five million, two hundred forty thousand, four hundred three".