13531201205 has 8 divisors (see below), whose sum is σ = 16797353400. Its totient is φ = 10451686336.

The previous prime is 13531201141. The next prime is 13531201213. The reversal of 13531201205 is 50210213531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2183412529 + 11347788676 = 46727^2 + 106526^2 .

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 13531201205 - 2⁶ = 13531201141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46659170 + ... + 46659459.

It is an arithmetic number, because the mean of its divisors is an integer number (2099669175).

Almost surely, 2^13531201205 is an apocalyptic number.

It is an amenable number.

13531201205 is a deficient number, since it is larger than the sum of its proper divisors (3266152195).

13531201205 is an equidigital number, since it uses as much as digits as its factorization.

13531201205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93318663.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 13531201205 its reverse (50210213531), we get a palindrome (63741414736).

The spelling of 13531201205 in words is "thirteen billion, five hundred thirty-one million, two hundred one thousand, two hundred five".