211203321313 has 4 divisors (see below), whose sum is σ = 211226057748. Its totient is φ = 211180584880.

The previous prime is 211203321299. The next prime is 211203321341. The reversal of 211203321313 is 313123302112.

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 110531646369 + 100671674944 = 332463^2 + 317288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211203321313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211203321613) 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, 11354278 + ... + 11372863.

It is an arithmetic number, because the mean of its divisors is an integer number (52806514437).

Almost surely, 2^211203321313 is an apocalyptic number.

It is an amenable number.

211203321313 is a deficient number, since it is larger than the sum of its proper divisors (22736435).

211203321313 is an equidigital number, since it uses as much as digits as its factorization.

211203321313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22736434.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 211203321313 its reverse (313123302112), we get a palindrome (524326623425).

It can be divided in two parts, 21120 and 3321313, that added together give a palindrome (3342433).

The spelling of 211203321313 in words is "two hundred eleven billion, two hundred three million, three hundred twenty-one thousand, three hundred thirteen".