214381 has 2 divisors, whose sum is σ = 214382. Its totient is φ = 214380.

The previous prime is 214373. The next prime is 214391. The reversal of 214381 is 183412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202500 + 11881 = 450^2 + 109^2 .

It is a cyclic number.

It is not a de Polignac number, because 214381 - 2³ = 214373 is a prime.

It is a super-2 number, since 2×214381² = 91918426322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

214381 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107190 + 107191.

It is an arithmetic number, because the mean of its divisors is an integer number (107191).

2²¹⁴³⁸¹ is an apocalyptic number.

It is an amenable number.

214381 is a deficient number, since it is larger than the sum of its proper divisors (1).

214381 is an equidigital number, since it uses as much as digits as its factorization.

214381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 214381 is about 463.0129587819. The cubic root of 214381 is about 59.8497164880.

Adding to 214381 its reverse (183412), we get a palindrome (397793).

It can be divided in two parts, 214 and 381, that added together give a palindrome (595).

The spelling of 214381 in words is "two hundred fourteen thousand, three hundred eighty-one".