13223404309 has 2 divisors, whose sum is σ = 13223404310. Its totient is φ = 13223404308.

The previous prime is 13223404273. The next prime is 13223404319. The reversal of 13223404309 is 90340432231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13007402500 + 216001809 = 114050^2 + 14697^2 .

It is a cyclic number.

It is not a de Polignac number, because 13223404309 - 2⁹ = 13223403797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13223404319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6611702154 + 6611702155.

It is an arithmetic number, because the mean of its divisors is an integer number (6611702155).

Almost surely, 2^13223404309 is an apocalyptic number.

It is an amenable number.

13223404309 is a deficient number, since it is larger than the sum of its proper divisors (1).

13223404309 is an equidigital number, since it uses as much as digits as its factorization.

13223404309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 31.

It can be divided in two parts, 13 and 223404309, that added together give a palindrome (223404322).

The spelling of 13223404309 in words is "thirteen billion, two hundred twenty-three million, four hundred four thousand, three hundred nine".