22306013 has 2 divisors, whose sum is σ = 22306014. Its totient is φ = 22306012.

The previous prime is 22306007. The next prime is 22306027. The reversal of 22306013 is 31060322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16337764 + 5968249 = 4042^2 + 2443^2 .

It is a cyclic number.

It is not a de Polignac number, because 22306013 - 2⁸ = 22305757 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22305982 and 22306000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22306033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11153006 + 11153007.

It is an arithmetic number, because the mean of its divisors is an integer number (11153007).

Almost surely, 2^22306013 is an apocalyptic number.

It is an amenable number.

22306013 is a deficient number, since it is larger than the sum of its proper divisors (1).

22306013 is an equidigital number, since it uses as much as digits as its factorization.

22306013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 22306013 is about 4722.9242001116. The cubic root of 22306013 is about 281.4971379665.

Adding to 22306013 its reverse (31060322), we get a palindrome (53366335).

The spelling of 22306013 in words is "twenty-two million, three hundred six thousand, thirteen".