213243303011 has 16 divisors (see below), whose sum is σ = 228057984000. Its totient is φ = 198895625280.

The previous prime is 213243302977. The next prime is 213243303059. The reversal of 213243303011 is 110303342312.

It is a cyclic number.

It is not a de Polignac number, because 213243303011 - 2¹⁰ = 213243301987 is a prime.

It is a super-2 number, since 2×213243303011² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213243603011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1828496 + ... + 1941618.

It is an arithmetic number, because the mean of its divisors is an integer number (14253624000).

Almost surely, 2^213243303011 is an apocalyptic number.

213243303011 is a deficient number, since it is larger than the sum of its proper divisors (14814680989).

213243303011 is a wasteful number, since it uses less digits than its factorization.

213243303011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115186.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 213243303011 its reverse (110303342312), we get a palindrome (323546645323).

The spelling of 213243303011 in words is "two hundred thirteen billion, two hundred forty-three million, three hundred three thousand, eleven".