11321230309 has 2 divisors, whose sum is σ = 11321230310. Its totient is φ = 11321230308.

The previous prime is 11321230303. The next prime is 11321230321. The reversal of 11321230309 is 90303212311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7467552225 + 3853678084 = 86415^2 + 62078^2 .

It is a cyclic number.

It is not a de Polignac number, because 11321230309 - 2¹³ = 11321222117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11321230303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660615154 + 5660615155.

It is an arithmetic number, because the mean of its divisors is an integer number (5660615155).

Almost surely, 2^11321230309 is an apocalyptic number.

It is an amenable number.

11321230309 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321230309 is an equidigital number, since it uses as much as digits as its factorization.

11321230309 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 11321230309 in words is "eleven billion, three hundred twenty-one million, two hundred thirty thousand, three hundred nine".