11313123213209 has 2 divisors, whose sum is σ = 11313123213210. Its totient is φ = 11313123213208.

The previous prime is 11313123213193. The next prime is 11313123213247. The reversal of 11313123213209 is 90231232131311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9212420828809 + 2100702384400 = 3035197^2 + 1449380^2 .

It is a cyclic number.

It is not a de Polignac number, because 11313123213209 - 2⁴ = 11313123213193 is a prime.

It is not a weakly prime, because it can be changed into another prime (11313123213299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656561606604 + 5656561606605.

It is an arithmetic number, because the mean of its divisors is an integer number (5656561606605).

Almost surely, 2^{11313123213209} is an apocalyptic number.

It is an amenable number.

11313123213209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11313123213209 is an equidigital number, since it uses as much as digits as its factorization.

11313123213209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 11313123213209 in words is "eleven trillion, three hundred thirteen billion, one hundred twenty-three million, two hundred thirteen thousand, two hundred nine".