2312133209 has 2 divisors, whose sum is σ = 2312133210. Its totient is φ = 2312133208.

The previous prime is 2312133169. The next prime is 2312133223. The reversal of 2312133209 is 9023312132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2081184400 + 230948809 = 45620^2 + 15197^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312133209 - 2¹⁶ = 2312067673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2312133269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156066604 + 1156066605.

It is an arithmetic number, because the mean of its divisors is an integer number (1156066605).

Almost surely, 2^2312133209 is an apocalyptic number.

It is an amenable number.

2312133209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312133209 is an equidigital number, since it uses as much as digits as its factorization.

2312133209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 2312133209 is about 48084.6462917219. The cubic root of 2312133209 is about 1322.3231985280.

The spelling of 2312133209 in words is "two billion, three hundred twelve million, one hundred thirty-three thousand, two hundred nine".