20350213 has 8 divisors (see below), whose sum is σ = 21961688. Its totient is φ = 18745344.

The previous prime is 20350181. The next prime is 20350217. The reversal of 20350213 is 31205302.

It can be written as a sum of positive squares in 4 ways, for example, as 12159169 + 8191044 = 3487^2 + 2862^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20350213 - 2⁵ = 20350181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20350217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6145 + ... + 8857.

It is an arithmetic number, because the mean of its divisors is an integer number (2745211).

Almost surely, 2^20350213 is an apocalyptic number.

It is an amenable number.

20350213 is a deficient number, since it is larger than the sum of its proper divisors (1611475).

20350213 is a wasteful number, since it uses less digits than its factorization.

20350213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20350213 is about 4511.1210358402. The cubic root of 20350213 is about 273.0169766755.

Adding to 20350213 its reverse (31205302), we get a palindrome (51555515).

The spelling of 20350213 in words is "twenty million, three hundred fifty thousand, two hundred thirteen".