2312231209 has 2 divisors, whose sum is σ = 2312231210. Its totient is φ = 2312231208.

The previous prime is 2312231179. The next prime is 2312231221. The reversal of 2312231209 is 9021322132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1842555625 + 469675584 = 42925^2 + 21672^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312231209 - 2⁵ = 2312231177 is a prime.

It is not a weakly prime, because it can be changed into another prime (2312231249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156115604 + 1156115605.

It is an arithmetic number, because the mean of its divisors is an integer number (1156115605).

Almost surely, 2^2312231209 is an apocalyptic number.

It is an amenable number.

2312231209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312231209 is an equidigital number, since it uses as much as digits as its factorization.

2312231209 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2312231209 is about 48085.6653172232. The cubic root of 2312231209 is about 1322.3418805316.

The spelling of 2312231209 in words is "two billion, three hundred twelve million, two hundred thirty-one thousand, two hundred nine".