12320310403 has 4 divisors (see below), whose sum is σ = 12402997200. Its totient is φ = 12237623608.

The previous prime is 12320310389. The next prime is 12320310419. The reversal of 12320310403 is 30401302321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30401302321 = 13 ⋅2338561717.

It is a cyclic number.

It is not a de Polignac number, because 12320310403 - 2²¹ = 12318213251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12320310493) 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, 41343175 + ... + 41343472.

It is an arithmetic number, because the mean of its divisors is an integer number (3100749300).

Almost surely, 2^12320310403 is an apocalyptic number.

12320310403 is a deficient number, since it is larger than the sum of its proper divisors (82686797).

12320310403 is an equidigital number, since it uses as much as digits as its factorization.

12320310403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82686796.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 12320310403 its reverse (30401302321), we get a palindrome (42721612724).

The spelling of 12320310403 in words is "twelve billion, three hundred twenty million, three hundred ten thousand, four hundred three".