213144404303 has 4 divisors (see below), whose sum is σ = 213150043608. Its totient is φ = 213138765000.

The previous prime is 213144404219. The next prime is 213144404311. The reversal of 213144404303 is 303404441312.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 213144404303 - 2¹² = 213144400207 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 (213144404503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2762573 + ... + 2838678.

It is an arithmetic number, because the mean of its divisors is an integer number (53287510902).

Almost surely, 2^213144404303 is an apocalyptic number.

213144404303 is a deficient number, since it is larger than the sum of its proper divisors (5639305).

213144404303 is an equidigital number, since it uses as much as digits as its factorization.

213144404303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639304.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 213144404303 its reverse (303404441312), we get a palindrome (516548845615).

The spelling of 213144404303 in words is "two hundred thirteen billion, one hundred forty-four million, four hundred four thousand, three hundred three".