13420431205 has 8 divisors (see below), whose sum is σ = 16105167000. Its totient is φ = 10735911936.

The previous prime is 13420431203. The next prime is 13420431221. The reversal of 13420431205 is 50213402431.

It can be written as a sum of positive squares in 4 ways, for example, as 477728449 + 12942702756 = 21857^2 + 113766^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13420431205 - 2¹ = 13420431203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13420431205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13420431203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157341 + ... + 227149.

It is an arithmetic number, because the mean of its divisors is an integer number (2013145875).

Almost surely, 2^13420431205 is an apocalyptic number.

It is an amenable number.

13420431205 is a deficient number, since it is larger than the sum of its proper divisors (2684735795).

13420431205 is an equidigital number, since it uses as much as digits as its factorization.

13420431205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108263.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 13420431205 its reverse (50213402431), we get a palindrome (63633833636).

The spelling of 13420431205 in words is "thirteen billion, four hundred twenty million, four hundred thirty-one thousand, two hundred five".