214805321 has 2 divisors, whose sum is σ = 214805322. Its totient is φ = 214805320.

The previous prime is 214805287. The next prime is 214805329. The reversal of 214805321 is 123508412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163840000 + 50965321 = 12800^2 + 7139^2 .

It is a cyclic number.

It is not a de Polignac number, because 214805321 - 2¹⁰ = 214804297 is a prime.

It is a super-2 number, since 2×214805321² = 92282651859826082, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (214805329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107402660 + 107402661.

It is an arithmetic number, because the mean of its divisors is an integer number (107402661).

Almost surely, 2^214805321 is an apocalyptic number.

It is an amenable number.

214805321 is a deficient number, since it is larger than the sum of its proper divisors (1).

214805321 is an equidigital number, since it uses as much as digits as its factorization.

214805321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 214805321 is about 14656.2382963706. The cubic root of 214805321 is about 598.8917700450.

The spelling of 214805321 in words is "two hundred fourteen million, eight hundred five thousand, three hundred twenty-one".