20622313 has 2 divisors, whose sum is σ = 20622314. Its totient is φ = 20622312.

The previous prime is 20622311. The next prime is 20622317. The reversal of 20622313 is 31322602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20403289 + 219024 = 4517^2 + 468^2 .

It is a cyclic number.

It is not a de Polignac number, because 20622313 - 2¹ = 20622311 is a prime.

Together with 20622311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20622311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10311156 + 10311157.

It is an arithmetic number, because the mean of its divisors is an integer number (10311157).

Almost surely, 2^20622313 is an apocalyptic number.

It is an amenable number.

20622313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20622313 is an equidigital number, since it uses as much as digits as its factorization.

20622313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20622313 is about 4541.1796925469. The cubic root of 20622313 is about 274.2284178719.

Adding to 20622313 its reverse (31322602), we get a palindrome (51944915).

The spelling of 20622313 in words is "twenty million, six hundred twenty-two thousand, three hundred thirteen".