13424400123403 has 4 divisors (see below), whose sum is σ = 13425062717088. Its totient is φ = 13423737529720.

The previous prime is 13424400123397. The next prime is 13424400123413. The reversal of 13424400123403 is 30432100442431.

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 13424400123403 - 2⁵ = 13424400123371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13424400123413) 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, 331266451 + ... + 331306972.

It is an arithmetic number, because the mean of its divisors is an integer number (3356265679272).

Almost surely, 2^{13424400123403} is an apocalyptic number.

13424400123403 is a deficient number, since it is larger than the sum of its proper divisors (662593685).

13424400123403 is an equidigital number, since it uses as much as digits as its factorization.

13424400123403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662593684.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 13424400123403 its reverse (30432100442431), we get a palindrome (43856500565834).

The spelling of 13424400123403 in words is "thirteen trillion, four hundred twenty-four billion, four hundred million, one hundred twenty-three thousand, four hundred three".