20303113 has 4 divisors (see below), whose sum is σ = 20317968. Its totient is φ = 20288260.

The previous prime is 20303111. The next prime is 20303119. The reversal of 20303113 is 31130302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20303113 - 2¹ = 20303111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20303093 and 20303102.

It is not an unprimeable number, because it can be changed into a prime (20303111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5143 + ... + 8188.

It is an arithmetic number, because the mean of its divisors is an integer number (5079492).

Almost surely, 2^20303113 is an apocalyptic number.

It is an amenable number.

20303113 is a deficient number, since it is larger than the sum of its proper divisors (14855).

20303113 is a wasteful number, since it uses less digits than its factorization.

20303113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14854.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 20303113 is about 4505.8975798391. The cubic root of 20303113 is about 272.8061839097.

Adding to 20303113 its reverse (31130302), we get a palindrome (51433415).

The spelling of 20303113 in words is "twenty million, three hundred three thousand, one hundred thirteen".