20203107 has 4 divisors (see below), whose sum is σ = 26937480. Its totient is φ = 13468736.

The previous prime is 20203093. The next prime is 20203129. The reversal of 20203107 is 70130202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20203107 - 2¹⁴ = 20186723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20203187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3367182 + ... + 3367187.

It is an arithmetic number, because the mean of its divisors is an integer number (6734370).

Almost surely, 2^20203107 is an apocalyptic number.

20203107 is a deficient number, since it is larger than the sum of its proper divisors (6734373).

20203107 is an equidigital number, since it uses as much as digits as its factorization.

20203107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734372.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 20203107 is about 4494.7866467720. The cubic root of 20203107 is about 272.3575306666.

Adding to 20203107 its reverse (70130202), we get a palindrome (90333309).

The spelling of 20203107 in words is "twenty million, two hundred three thousand, one hundred seven".