11313220309 has 2 divisors, whose sum is σ = 11313220310. Its totient is φ = 11313220308.

The previous prime is 11313220267. The next prime is 11313220327. The reversal of 11313220309 is 90302231311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9741097809 + 1572122500 = 98697^2 + 39650^2 .

It is a cyclic number.

It is not a de Polignac number, because 11313220309 - 2¹⁵ = 11313187541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11313220349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656610154 + 5656610155.

It is an arithmetic number, because the mean of its divisors is an integer number (5656610155).

Almost surely, 2^11313220309 is an apocalyptic number.

It is an amenable number.

11313220309 is a deficient number, since it is larger than the sum of its proper divisors (1).

11313220309 is an equidigital number, since it uses as much as digits as its factorization.

11313220309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 11313220309 in words is "eleven billion, three hundred thirteen million, two hundred twenty thousand, three hundred nine".