20303101 has 12 divisors (see below), whose sum is σ = 25435452. Its totient is φ = 16063488.

The previous prime is 20303071. The next prime is 20303111. The reversal of 20303101 is 10130302.

It can be written as a sum of positive squares in 2 ways, for example, as 3705625 + 16597476 = 1925^2 + 4074^2 .

It is not a de Polignac number, because 20303101 - 2⁵ = 20303069 is a prime.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 15300 + ... + 16573.

It is an arithmetic number, because the mean of its divisors is an integer number (2119621).

Almost surely, 2^20303101 is an apocalyptic number.

It is an amenable number.

20303101 is a deficient number, since it is larger than the sum of its proper divisors (5132351).

20303101 is a wasteful number, since it uses less digits than its factorization.

20303101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31900 (or 31893 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 20303101 is about 4505.8962482507. The cubic root of 20303101 is about 272.8061301630.

Adding to 20303101 its reverse (10130302), we get a palindrome (30433403).

The spelling of 20303101 in words is "twenty million, three hundred three thousand, one hundred one".