20303001 has 24 divisors (see below), whose sum is σ = 31760160. Its totient is φ = 12816792.

The previous prime is 20302993. The next prime is 20303011. The reversal of 20303001 is 10030302.

It is a happy number.

It is not a de Polignac number, because 20303001 - 2³ = 20302993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20303011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8706 + ... + 10788.

It is an arithmetic number, because the mean of its divisors is an integer number (1323340).

Almost surely, 2^20303001 is an apocalyptic number.

It is an amenable number.

20303001 is a deficient number, since it is larger than the sum of its proper divisors (11457159).

20303001 is a wasteful number, since it uses less digits than its factorization.

20303001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130 (or 2105 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 20303001 is about 4505.8851516655. The cubic root of 20303001 is about 272.8056822731.

Adding to 20303001 its reverse (10030302), we get a palindrome (30333303).

The spelling of 20303001 in words is "twenty million, three hundred three thousand, one".