209232106 has 4 divisors (see below), whose sum is σ = 313848162. Its totient is φ = 104616052.

The previous prime is 209232097. The next prime is 209232137. The reversal of 209232106 is 601232902.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601232902 = 2 ⋅300616451.

It can be written as a sum of positive squares in only one way, i.e., 129754881 + 79477225 = 11391^2 + 8915^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52308025 + ... + 52308028.

Almost surely, 2^209232106 is an apocalyptic number.

209232106 is a deficient number, since it is larger than the sum of its proper divisors (104616056).

209232106 is a wasteful number, since it uses less digits than its factorization.

209232106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104616055.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 209232106 is about 14464.8576211451. The cubic root of 209232106 is about 593.6668180276. Note that the first 3 decimals are identical.

The spelling of 209232106 in words is "two hundred nine million, two hundred thirty-two thousand, one hundred six".