214135209 has 6 divisors (see below), whose sum is σ = 309306426. Its totient is φ = 142756800.

The previous prime is 214135189. The next prime is 214135223. The reversal of 214135209 is 902531412.

214135209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 147549609 + 66585600 = 12147^2 + 8160^2 .

It is not a de Polignac number, because 214135209 - 2⁵ = 214135177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (214135279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11896392 + ... + 11896409.

It is an arithmetic number, because the mean of its divisors is an integer number (51551071).

Almost surely, 2^214135209 is an apocalyptic number.

It is an amenable number.

214135209 is a deficient number, since it is larger than the sum of its proper divisors (95171217).

214135209 is a wasteful number, since it uses less digits than its factorization.

214135209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23792807 (or 23792804 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 214135209 is about 14633.3594570762. The cubic root of 214135209 is about 598.2683487814.

The spelling of 214135209 in words is "two hundred fourteen million, one hundred thirty-five thousand, two hundred nine".