20303099 has 4 divisors (see below), whose sum is σ = 20323680. Its totient is φ = 20282520.

The previous prime is 20303071. The next prime is 20303111. The reversal of 20303099 is 99030302.

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 20303099 - 2²⁴ = 3525883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20303069) 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, 8732 + ... + 10809.

It is an arithmetic number, because the mean of its divisors is an integer number (5080920).

Almost surely, 2^20303099 is an apocalyptic number.

20303099 is a deficient number, since it is larger than the sum of its proper divisors (20581).

20303099 is a wasteful number, since it uses less digits than its factorization.

20303099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20580.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 20303099 is about 4505.8960263193. The cubic root of 20303099 is about 272.8061212052.

The spelling of 20303099 in words is "twenty million, three hundred three thousand, ninety-nine".