211321230313 has 4 divisors (see below), whose sum is σ = 211351131460. Its totient is φ = 211291329168.

The previous prime is 211321230259. The next prime is 211321230401. The reversal of 211321230313 is 313032123112.

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 67417083904 + 143904146409 = 259648^2 + 379347^2 .

It is a cyclic number.

It is not a de Polignac number, because 211321230313 - 2¹³ = 211321222121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211321200313) 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, 14939970 + ... + 14954107.

It is an arithmetic number, because the mean of its divisors is an integer number (52837782865).

Almost surely, 2^211321230313 is an apocalyptic number.

It is an amenable number.

211321230313 is a deficient number, since it is larger than the sum of its proper divisors (29901147).

211321230313 is an equidigital number, since it uses as much as digits as its factorization.

211321230313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29901146.

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

Adding to 211321230313 its reverse (313032123112), we get a palindrome (524353353425).

The spelling of 211321230313 in words is "two hundred eleven billion, three hundred twenty-one million, two hundred thirty thousand, three hundred thirteen".