20213353 has 2 divisors, whose sum is σ = 20213354. Its totient is φ = 20213352.

The previous prime is 20213351. The next prime is 20213399. The reversal of 20213353 is 35331202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17614809 + 2598544 = 4197^2 + 1612^2 .

It is a cyclic number.

It is not a de Polignac number, because 20213353 - 2¹ = 20213351 is a prime.

Together with 20213351, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20213353.

It is not a weakly prime, because it can be changed into another prime (20213351) 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, 10106676 + 10106677.

It is an arithmetic number, because the mean of its divisors is an integer number (10106677).

Almost surely, 2^20213353 is an apocalyptic number.

It is an amenable number.

20213353 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213353 is an equidigital number, since it uses as much as digits as its factorization.

20213353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 20213353 is about 4495.9262671890. The cubic root of 20213353 is about 272.4035649002.

Adding to 20213353 its reverse (35331202), we get a palindrome (55544555).

The spelling of 20213353 in words is "twenty million, two hundred thirteen thousand, three hundred fifty-three".