234071209 has 4 divisors (see below), whose sum is σ = 242142660. Its totient is φ = 225999760.

The previous prime is 234071197. The next prime is 234071219. The reversal of 234071209 is 902170432.

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 108743184 + 125328025 = 10428^2 + 11195^2 .

It is a cyclic number.

It is not a de Polignac number, because 234071209 - 2⁵ = 234071177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (234071219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4035682 + ... + 4035739.

It is an arithmetic number, because the mean of its divisors is an integer number (60535665).

Almost surely, 2^234071209 is an apocalyptic number.

234071209 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

234071209 is a deficient number, since it is larger than the sum of its proper divisors (8071451).

234071209 is an equidigital number, since it uses as much as digits as its factorization.

234071209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8071450.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 234071209 is about 15299.3859027086. The cubic root of 234071209 is about 616.2865165491.

The spelling of 234071209 in words is "two hundred thirty-four million, seventy-one thousand, two hundred nine".