211230313 has 4 divisors (see below), whose sum is σ = 241406080. Its totient is φ = 181054548.

The previous prime is 211230301. The next prime is 211230317. The reversal of 211230313 is 313032112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211230313 - 2⁹ = 211229801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211230317) 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, 15087873 + ... + 15087886.

It is an arithmetic number, because the mean of its divisors is an integer number (60351520).

Almost surely, 2^211230313 is an apocalyptic number.

It is an amenable number.

211230313 is a deficient number, since it is larger than the sum of its proper divisors (30175767).

211230313 is an equidigital number, since it uses as much as digits as its factorization.

211230313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30175766.

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

The square root of 211230313 is about 14533.7645845803. The cubic root of 211230313 is about 595.5507110829.

Adding to 211230313 its reverse (313032112), we get a palindrome (524262425).

The spelling of 211230313 in words is "two hundred eleven million, two hundred thirty thousand, three hundred thirteen".