20129303 has 4 divisors (see below), whose sum is σ = 21188760. Its totient is φ = 19069848.

The previous prime is 20129287. The next prime is 20129311. The reversal of 20129303 is 30392102.

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 20129303 - 2⁴ = 20129287 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 (20129353) 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, 529700 + ... + 529737.

It is an arithmetic number, because the mean of its divisors is an integer number (5297190).

Almost surely, 2^20129303 is an apocalyptic number.

20129303 is a deficient number, since it is larger than the sum of its proper divisors (1059457).

20129303 is a wasteful number, since it uses less digits than its factorization.

20129303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059456.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 20129303 is about 4486.5691792282. The cubic root of 20129303 is about 272.0254760956.

The spelling of 20129303 in words is "twenty million, one hundred twenty-nine thousand, three hundred three".