213423271 has 2 divisors, whose sum is σ = 213423272. Its totient is φ = 213423270.

The previous prime is 213423269. The next prime is 213423277. The reversal of 213423271 is 172324312.

It is a happy number.

213423271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213423271 - 2¹ = 213423269 is a prime.

Together with 213423269, it forms a pair of twin primes.

It is equal to p_11780053 and since 213423271 and 11780053 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 (213423277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106711635 + 106711636.

It is an arithmetic number, because the mean of its divisors is an integer number (106711636).

Almost surely, 2^213423271 is an apocalyptic number.

213423271 is a deficient number, since it is larger than the sum of its proper divisors (1).

213423271 is an equidigital number, since it uses as much as digits as its factorization.

213423271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 25.

The square root of 213423271 is about 14609.0133479301. The cubic root of 213423271 is about 597.6045892202.

Adding to 213423271 its reverse (172324312), we get a palindrome (385747583).

The spelling of 213423271 in words is "two hundred thirteen million, four hundred twenty-three thousand, two hundred seventy-one".