214730145281 has 4 divisors (see below), whose sum is σ = 214754686212. Its totient is φ = 214705604352.

The previous prime is 214730145277. The next prime is 214730145299. The reversal of 214730145281 is 182541037412.

It is a happy number.

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 104383271056 + 110346874225 = 323084^2 + 332185^2 .

It is a cyclic number.

It is not a de Polignac number, because 214730145281 - 2² = 214730145277 is a prime.

It is a super-2 number, since 2×214730145281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (214730175281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12257336 + ... + 12274841.

It is an arithmetic number, because the mean of its divisors is an integer number (53688671553).

Almost surely, 2^214730145281 is an apocalyptic number.

It is an amenable number.

214730145281 is a deficient number, since it is larger than the sum of its proper divisors (24540931).

214730145281 is an equidigital number, since it uses as much as digits as its factorization.

214730145281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24540930.

The product of its (nonzero) digits is 53760, while the sum is 38.

The spelling of 214730145281 in words is "two hundred fourteen billion, seven hundred thirty million, one hundred forty-five thousand, two hundred eighty-one".