1213410321543 has 8 divisors (see below), whose sum is σ = 1849006204288. Its totient is φ = 693377326584.

The previous prime is 1213410321521. The next prime is 1213410321589. The reversal of 1213410321543 is 3451230143121.

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

It is not a de Polignac number, because 1213410321543 - 2⁵ = 1213410321511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213410321543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213410321443) 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, 28890721921 + ... + 28890721962.

It is an arithmetic number, because the mean of its divisors is an integer number (231125775536).

Almost surely, 2^{1213410321543} is an apocalyptic number.

1213410321543 is a deficient number, since it is larger than the sum of its proper divisors (635595882745).

1213410321543 is an equidigital number, since it uses as much as digits as its factorization.

1213410321543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57781443893.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 1213410321543 its reverse (3451230143121), we get a palindrome (4664640464664).

The spelling of 1213410321543 in words is "one trillion, two hundred thirteen billion, four hundred ten million, three hundred twenty-one thousand, five hundred forty-three".