211242313 has 8 divisors (see below), whose sum is σ = 213621408. Its totient is φ = 208872384.

The previous prime is 211242307. The next prime is 211242337. The reversal of 211242313 is 313242112.

It is a happy number.

211242313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211242313 - 2⁹ = 211241801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211242013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50770 + ... + 54772.

It is an arithmetic number, because the mean of its divisors is an integer number (26702676).

Almost surely, 2^211242313 is an apocalyptic number.

It is an amenable number.

211242313 is a deficient number, since it is larger than the sum of its proper divisors (2379095).

211242313 is a wasteful number, since it uses less digits than its factorization.

211242313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583.

The product of its digits is 288, while the sum is 19.

The square root of 211242313 is about 14534.1774105038. The cubic root of 211242313 is about 595.5619886202.

Adding to 211242313 its reverse (313242112), we get a palindrome (524484425).

The spelling of 211242313 in words is "two hundred eleven million, two hundred forty-two thousand, three hundred thirteen".