12403424353 has 4 divisors (see below), whose sum is σ = 12803534848. Its totient is φ = 12003313860.

The previous prime is 12403424339. The next prime is 12403424357. The reversal of 12403424353 is 35342430421.

It is a happy number.

12403424353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35342430421 = 52919 ⋅667859.

It is a cyclic number.

It is not a de Polignac number, because 12403424353 - 2¹³ = 12403416161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 400110463 = 12403424353 / (1 + 2 + 4 + 0 + 3 + 4 + 2 + 4 + 3 + 5 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12403424357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200055201 + ... + 200055262.

It is an arithmetic number, because the mean of its divisors is an integer number (3200883712).

Almost surely, 2^12403424353 is an apocalyptic number.

It is an amenable number.

12403424353 is a deficient number, since it is larger than the sum of its proper divisors (400110495).

12403424353 is an equidigital number, since it uses as much as digits as its factorization.

12403424353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400110494.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 12403424353 its reverse (35342430421), we get a palindrome (47745854774).

The spelling of 12403424353 in words is "twelve billion, four hundred three million, four hundred twenty-four thousand, three hundred fifty-three".