13201231213 has 4 divisors (see below), whose sum is σ = 13256008348. Its totient is φ = 13146454080.

The previous prime is 13201231207. The next prime is 13201231223. The reversal of 13201231213 is 31213210231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11233244169 + 1967987044 = 105987^2 + 44362^2 .

It is a cyclic number.

It is not a de Polignac number, because 13201231213 - 2⁵ = 13201231181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13201231223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 27388206 + ... + 27388687.

It is an arithmetic number, because the mean of its divisors is an integer number (3314002087).

Almost surely, 2^13201231213 is an apocalyptic number.

It is an amenable number.

13201231213 is a deficient number, since it is larger than the sum of its proper divisors (54777135).

13201231213 is an equidigital number, since it uses as much as digits as its factorization.

13201231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54777134.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13201231213 its reverse (31213210231), we get a palindrome (44414441444).

The spelling of 13201231213 in words is "thirteen billion, two hundred one million, two hundred thirty-one thousand, two hundred thirteen".