213273469 has 2 divisors, whose sum is σ = 213273470. Its totient is φ = 213273468.

The previous prime is 213273413. The next prime is 213273481. The reversal of 213273469 is 964372312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106874244 + 106399225 = 10338^2 + 10315^2 .

It is a cyclic number.

It is not a de Polignac number, because 213273469 - 2⁹ = 213272957 is a prime.

It is a super-2 number, since 2×213273469² = 90971145158587922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213277469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106636734 + 106636735.

It is an arithmetic number, because the mean of its divisors is an integer number (106636735).

Almost surely, 2^213273469 is an apocalyptic number.

It is an amenable number.

213273469 is a deficient number, since it is larger than the sum of its proper divisors (1).

213273469 is an equidigital number, since it uses as much as digits as its factorization.

213273469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 213273469 is about 14603.8854076578. The cubic root of 213273469 is about 597.4647367481.

The spelling of 213273469 in words is "two hundred thirteen million, two hundred seventy-three thousand, four hundred sixty-nine".