13211312403 has 16 divisors (see below), whose sum is σ = 17762976000. Its totient is φ = 8733697440.

The previous prime is 13211312381. The next prime is 13211312419. The reversal of 13211312403 is 30421311231.

It is not a de Polignac number, because 13211312403 - 2⁶ = 13211312339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13211312403.

It is not an unprimeable number, because it can be changed into a prime (13211312423) 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, 537793 + ... + 561821.

It is an arithmetic number, because the mean of its divisors is an integer number (1110186000).

Almost surely, 2^13211312403 is an apocalyptic number.

13211312403 is a deficient number, since it is larger than the sum of its proper divisors (4551663597).

13211312403 is a wasteful number, since it uses less digits than its factorization.

13211312403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25562.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13211312403 its reverse (30421311231), we get a palindrome (43632623634).

The spelling of 13211312403 in words is "thirteen billion, two hundred eleven million, three hundred twelve thousand, four hundred three".