214805281 has 2 divisors, whose sum is σ = 214805282. Its totient is φ = 214805280.

The previous prime is 214805243. The next prime is 214805287. The reversal of 214805281 is 182508412.

214805281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130165281 + 84640000 = 11409^2 + 9200^2 .

It is a cyclic number.

It is not a de Polignac number, because 214805281 - 2¹⁷ = 214674209 is a prime.

It is a super-2 number, since 2×214805281² = 92282617490977922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (214805287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107402640 + 107402641.

It is an arithmetic number, because the mean of its divisors is an integer number (107402641).

Almost surely, 2^214805281 is an apocalyptic number.

It is an amenable number.

214805281 is a deficient number, since it is larger than the sum of its proper divisors (1).

214805281 is an equidigital number, since it uses as much as digits as its factorization.

214805281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 214805281 is about 14656.2369317639. The cubic root of 214805281 is about 598.8917328707.

The spelling of 214805281 in words is "two hundred fourteen million, eight hundred five thousand, two hundred eighty-one".