22420313 has 2 divisors, whose sum is σ = 22420314. Its totient is φ = 22420312.

The previous prime is 22420291. The next prime is 22420327. The reversal of 22420313 is 31302422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20912329 + 1507984 = 4573^2 + 1228^2 .

It is a cyclic number.

It is not a de Polignac number, because 22420313 - 2⁶ = 22420249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22420291 and 22420300.

It is not a weakly prime, because it can be changed into another prime (22420213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11210156 + 11210157.

It is an arithmetic number, because the mean of its divisors is an integer number (11210157).

Almost surely, 2^22420313 is an apocalyptic number.

It is an amenable number.

22420313 is a deficient number, since it is larger than the sum of its proper divisors (1).

22420313 is an equidigital number, since it uses as much as digits as its factorization.

22420313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22420313 is about 4735.0092924935. The cubic root of 22420313 is about 281.9771329311.

Adding to 22420313 its reverse (31302422), we get a palindrome (53722735).

The spelling of 22420313 in words is "twenty-two million, four hundred twenty thousand, three hundred thirteen".