211313471 has 2 divisors, whose sum is σ = 211313472. Its totient is φ = 211313470.

The previous prime is 211313449. The next prime is 211313507. The reversal of 211313471 is 174313112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211313471 - 2¹⁰ = 211312447 is a prime.

It is a super-3 number, since 3×211313471³ (a number of 26 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_11670026 and since 211313471 and 11670026 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211313411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105656735 + 105656736.

It is an arithmetic number, because the mean of its divisors is an integer number (105656736).

Almost surely, 2^211313471 is an apocalyptic number.

211313471 is a deficient number, since it is larger than the sum of its proper divisors (1).

211313471 is an equidigital number, since it uses as much as digits as its factorization.

211313471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 23.

The square root of 211313471 is about 14536.6251585435. The cubic root of 211313471 is about 595.6288537631.

Adding to 211313471 its reverse (174313112), we get a palindrome (385626583).

The spelling of 211313471 in words is "two hundred eleven million, three hundred thirteen thousand, four hundred seventy-one".