214520305 has 8 divisors (see below), whose sum is σ = 257545152. Its totient is φ = 171535728.

The previous prime is 214520291. The next prime is 214520321. The reversal of 214520305 is 503025412.

214520305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 214520305 - 2¹³ = 214512113 is a prime.

It is a super-2 number, since 2×214520305² = 92037922514586050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3262 + ... + 20968.

It is an arithmetic number, because the mean of its divisors is an integer number (32193144).

Almost surely, 2^214520305 is an apocalyptic number.

It is an amenable number.

214520305 is a deficient number, since it is larger than the sum of its proper divisors (43024847).

214520305 is a wasteful number, since it uses less digits than its factorization.

214520305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20135.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 214520305 is about 14646.5117007429. The cubic root of 214520305 is about 598.6267715073.

Adding to 214520305 its reverse (503025412), we get a palindrome (717545717).

The spelling of 214520305 in words is "two hundred fourteen million, five hundred twenty thousand, three hundred five".