4231112209 has 9 divisors (see below), whose sum is σ = 4383998203. Its totient is φ = 4083390472.

The previous prime is 4231112203. The next prime is 4231112231. The reversal of 4231112209 is 9022111324.

The square root of 4231112209 is 65047.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2218692609 + 2012419600 = 47103^2 + 44860^2 .

It is not a de Polignac number, because 4231112209 - 2¹⁵ = 4231079441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4231112203) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1885242 + ... + 1887484.

Almost surely, 2^4231112209 is an apocalyptic number.

4231112209 is the 65047-th square number.

4231112209 is the 32524-th centered octagonal number.

It is an amenable number.

4231112209 is a deficient number, since it is larger than the sum of its proper divisors (152885994).

4231112209 is an frugal number, since it uses more digits than its factorization.

4231112209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544 (or 2272 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The cubic root of 4231112209 is about 1617.4027641542.

Multiplying 4231112209 by its sum of digits (25), we get a square (105777805225 = 325235²).

The spelling of 4231112209 in words is "four billion, two hundred thirty-one million, one hundred twelve thousand, two hundred nine".