20345303 has 6 divisors (see below), whose sum is σ = 22363152. Its totient is φ = 18495620.

The previous prime is 20345293. The next prime is 20345357. The reversal of 20345303 is 30354302.

It is not a de Polignac number, because 20345303 - 2¹⁸ = 20083159 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 (20345603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83951 + ... + 84192.

It is an arithmetic number, because the mean of its divisors is an integer number (3727192).

Almost surely, 2^20345303 is an apocalyptic number.

20345303 is a deficient number, since it is larger than the sum of its proper divisors (2017849).

20345303 is a wasteful number, since it uses less digits than its factorization.

20345303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168165 (or 168154 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 20345303 is about 4510.5767923848. The cubic root of 20345303 is about 272.9950175085.

Adding to 20345303 its reverse (30354302), we get a palindrome (50699605).

It can be divided in two parts, 2034 and 5303, that added together give a palindrome (7337).

The spelling of 20345303 in words is "twenty million, three hundred forty-five thousand, three hundred three".