214319081 has 4 divisors (see below), whose sum is σ = 214730964. Its totient is φ = 213907200.

The previous prime is 214319057. The next prime is 214319087. The reversal of 214319081 is 180913412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119159056 + 95160025 = 10916^2 + 9755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214319081 is a prime.

It is a super-2 number, since 2×214319081² = 91865336961369122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214319087) 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 in 3 ways as a sum of consecutive naturals, for example, 205160 + ... + 206201.

It is an arithmetic number, because the mean of its divisors is an integer number (53682741).

Almost surely, 2^214319081 is an apocalyptic number.

It is an amenable number.

214319081 is a deficient number, since it is larger than the sum of its proper divisors (411883).

214319081 is an equidigital number, since it uses as much as digits as its factorization.

214319081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411882.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 214319081 is about 14639.6407401275. The cubic root of 214319081 is about 598.4395386374.

The spelling of 214319081 in words is "two hundred fourteen million, three hundred nineteen thousand, eighty-one".