12403430403 has 16 divisors (see below), whose sum is σ = 20354347776. Its totient is φ = 6542468640.

The previous prime is 12403430399. The next prime is 12403430461. The reversal of 12403430403 is 30403430421.

It is not a de Polignac number, because 12403430403 - 2² = 12403430399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12403430203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22716633 + ... + 22717178.

It is an arithmetic number, because the mean of its divisors is an integer number (1272146736).

Almost surely, 2^12403430403 is an apocalyptic number.

12403430403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12403430403 is a deficient number, since it is larger than the sum of its proper divisors (7950917373).

12403430403 is a wasteful number, since it uses less digits than its factorization.

12403430403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45433834.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 12403430403 its reverse (30403430421), we get a palindrome (42806860824).

The spelling of 12403430403 in words is "twelve billion, four hundred three million, four hundred thirty thousand, four hundred three".