11032312009 has 2 divisors, whose sum is σ = 11032312010. Its totient is φ = 11032312008.

The previous prime is 11032312007. The next prime is 11032312051. The reversal of 11032312009 is 90021323011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10875361225 + 156950784 = 104285^2 + 12528^2 .

It is a cyclic number.

It is not a de Polignac number, because 11032312009 - 2¹ = 11032312007 is a prime.

Together with 11032312007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11032312007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5516156004 + 5516156005.

It is an arithmetic number, because the mean of its divisors is an integer number (5516156005).

Almost surely, 2^11032312009 is an apocalyptic number.

It is an amenable number.

11032312009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11032312009 is an equidigital number, since it uses as much as digits as its factorization.

11032312009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 11032312009 in words is "eleven billion, thirty-two million, three hundred twelve thousand, nine".