209134235 has 16 divisors (see below), whose sum is σ = 270617760. Its totient is φ = 154632960.

The previous prime is 209134229. The next prime is 209134259. The reversal of 209134235 is 532431902.

It is not a de Polignac number, because 209134235 - 2⁶ = 209134171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 209134198 and 209134207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22952 + ... + 30741.

It is an arithmetic number, because the mean of its divisors is an integer number (16913610).

Almost surely, 2^209134235 is an apocalyptic number.

209134235 is a deficient number, since it is larger than the sum of its proper divisors (61483525).

209134235 is a wasteful number, since it uses less digits than its factorization.

209134235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53758.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 209134235 is about 14461.4741641369. The cubic root of 209134235 is about 593.5742385026.

The spelling of 209134235 in words is "two hundred nine million, one hundred thirty-four thousand, two hundred thirty-five".