11331131333209 has 2 divisors, whose sum is σ = 11331131333210. Its totient is φ = 11331131333208.

The previous prime is 11331131333167. The next prime is 11331131333243. The reversal of 11331131333209 is 90233313113311.

11331131333209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (11331131333243) can be obtained adding 11331131333209 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10039392250000 + 1291739083209 = 3168500^2 + 1136547^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331131333209 - 2²¹ = 11331129236057 is a prime.

It is not a weakly prime, because it can be changed into another prime (11331131333279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665565666604 + 5665565666605.

It is an arithmetic number, because the mean of its divisors is an integer number (5665565666605).

Almost surely, 2^{11331131333209} is an apocalyptic number.

It is an amenable number.

11331131333209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331131333209 is an equidigital number, since it uses as much as digits as its factorization.

11331131333209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 34.

The spelling of 11331131333209 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred thirty-three thousand, two hundred nine".