20030321020 has 24 divisors (see below), whose sum is σ = 42066670464. Its totient is φ = 8011557696.

The previous prime is 20030320991. The next prime is 20030321033. The reversal of 20030321020 is 2012303002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358197 + ... + 410323.

It is an arithmetic number, because the mean of its divisors is an integer number (1752777936).

Almost surely, 2^20030321020 is an apocalyptic number.

20030321020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20030321020 is an abundant number, since it is smaller than the sum of its proper divisors (22036349444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20030321020 is a wasteful number, since it uses less digits than its factorization.

20030321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71349 (or 71347 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20030321020 its reverse (2012303002), we get a palindrome (22042624022).

The spelling of 20030321020 in words is "twenty billion, thirty million, three hundred twenty-one thousand, twenty".