13203213231541 has 2 divisors, whose sum is σ = 13203213231542. Its totient is φ = 13203213231540.

The previous prime is 13203213231539. The next prime is 13203213231619. The reversal of 13203213231541 is 14513231230231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11474919126225 + 1728294105316 = 3387465^2 + 1314646^2 .

It is an emirp because it is prime and its reverse (14513231230231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13203213231541 - 2¹ = 13203213231539 is a prime.

Together with 13203213231539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13203213831541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6601606615770 + 6601606615771.

It is an arithmetic number, because the mean of its divisors is an integer number (6601606615771).

Almost surely, 2^{13203213231541} is an apocalyptic number.

It is an amenable number.

13203213231541 is a deficient number, since it is larger than the sum of its proper divisors (1).

13203213231541 is an equidigital number, since it uses as much as digits as its factorization.

13203213231541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 13203213231541 its reverse (14513231230231), we get a palindrome (27716444461772).

The spelling of 13203213231541 in words is "thirteen trillion, two hundred three billion, two hundred thirteen million, two hundred thirty-one thousand, five hundred forty-one".