211020043313 has 4 divisors (see below), whose sum is σ = 212364120180. Its totient is φ = 209675966448.

The previous prime is 211020043309. The next prime is 211020043327. The reversal of 211020043313 is 313340020112.

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 143844215824 + 67175827489 = 379268^2 + 259183^2 .

It is a cyclic number.

It is not a de Polignac number, because 211020043313 - 2² = 211020043309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211020043613) 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, 672038198 + ... + 672038511.

It is an arithmetic number, because the mean of its divisors is an integer number (53091030045).

Almost surely, 2^211020043313 is an apocalyptic number.

It is an amenable number.

211020043313 is a deficient number, since it is larger than the sum of its proper divisors (1344076867).

211020043313 is a wasteful number, since it uses less digits than its factorization.

211020043313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344076866.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 211020043313 its reverse (313340020112), we get a palindrome (524360063425).

The spelling of 211020043313 in words is "two hundred eleven billion, twenty million, forty-three thousand, three hundred thirteen".