213424669 has 2 divisors, whose sum is σ = 213424670. Its totient is φ = 213424668.

The previous prime is 213424667. The next prime is 213424699. The reversal of 213424669 is 966424312.

It is a happy number.

213424669 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 can be written as a sum of positive squares in only one way, i.e., 206295769 + 7128900 = 14363^2 + 2670^2 .

It is a cyclic number.

It is not a de Polignac number, because 213424669 - 2¹ = 213424667 is a prime.

It is a super-2 number, since 2×213424669² = 91100178675519122, which contains 22 as substring.

Together with 213424667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213424667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106712334 + 106712335.

It is an arithmetic number, because the mean of its divisors is an integer number (106712335).

Almost surely, 2^213424669 is an apocalyptic number.

It is an amenable number.

213424669 is a deficient number, since it is larger than the sum of its proper divisors (1).

213424669 is an equidigital number, since it uses as much as digits as its factorization.

213424669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 213424669 is about 14609.0611950255. The cubic root of 213424669 is about 597.6058940598.

The spelling of 213424669 in words is "two hundred thirteen million, four hundred twenty-four thousand, six hundred sixty-nine".