211312023313 has 2 divisors, whose sum is σ = 211312023314. Its totient is φ = 211312023312.

The previous prime is 211312023281. The next prime is 211312023337. The reversal of 211312023313 is 313320213112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144591583504 + 66720439809 = 380252^2 + 258303^2 .

It is a cyclic number.

It is not a de Polignac number, because 211312023313 - 2⁵ = 211312023281 is a prime.

It is not a weakly prime, because it can be changed into another prime (211312023353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105656011656 + 105656011657.

It is an arithmetic number, because the mean of its divisors is an integer number (105656011657).

Almost surely, 2^211312023313 is an apocalyptic number.

It is an amenable number.

211312023313 is a deficient number, since it is larger than the sum of its proper divisors (1).

211312023313 is an equidigital number, since it uses as much as digits as its factorization.

211312023313 is an evil number, because the sum of its binary digits is even.

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

Adding to 211312023313 its reverse (313320213112), we get a palindrome (524632236425).

The spelling of 211312023313 in words is "two hundred eleven billion, three hundred twelve million, twenty-three thousand, three hundred thirteen".