20303131330020 has 288 divisors, whose sum is σ = 73676977920000. Its totient is φ = 4129069781760.

The previous prime is 20303131330003. The next prime is 20303131330061. The reversal of 20303131330020 is 2003313130302.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5158770 + ... + 8198729.

It is an arithmetic number, because the mean of its divisors is an integer number (255822840000).

Almost surely, 2^{20303131330020} is an apocalyptic number.

20303131330020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20303131330020 is an abundant number, since it is smaller than the sum of its proper divisors (53373846589980).

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

20303131330020 is a wasteful number, since it uses less digits than its factorization.

20303131330020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13357583 (or 13357574 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20303131330020 its reverse (2003313130302), we get a palindrome (22306444460322).

The spelling of 20303131330020 in words is "twenty trillion, three hundred three billion, one hundred thirty-one million, three hundred thirty thousand, twenty".