211023313 has 2 divisors, whose sum is σ = 211023314. Its totient is φ = 211023312.

The previous prime is 211023311. The next prime is 211023331. The reversal of 211023313 is 313320112.

Together with next prime (211023331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119093569 + 91929744 = 10913^2 + 9588^2 .

It is a cyclic number.

It is not a de Polignac number, because 211023313 - 2¹ = 211023311 is a prime.

Together with 211023311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211023311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105511656 + 105511657.

It is an arithmetic number, because the mean of its divisors is an integer number (105511657).

Almost surely, 2^211023313 is an apocalyptic number.

It is an amenable number.

211023313 is a deficient number, since it is larger than the sum of its proper divisors (1).

211023313 is an equidigital number, since it uses as much as digits as its factorization.

211023313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 211023313 is about 14526.6414907232. The cubic root of 211023313 is about 595.3561062975.

Adding to 211023313 its reverse (313320112), we get a palindrome (524343425).

The spelling of 211023313 in words is "two hundred eleven million, twenty-three thousand, three hundred thirteen".