20303131002320 has 40 divisors (see below), whose sum is σ = 48095435808936. Its totient is φ = 7968021221888.

The previous prime is 20303131002311. The next prime is 20303131002337. The reversal of 20303131002320 is 2320013130302.

It can be written as a sum of positive squares in 4 ways, for example, as 6500093022784 + 13803037979536 = 2549528^2 + 3715244^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×20303131002320³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20303131002292 and 20303131002301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2394232907 + ... + 2394241386.

Almost surely, 2^{20303131002320} is an apocalyptic number.

20303131002320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20303131002320 is an abundant number, since it is smaller than the sum of its proper divisors (27792304806616).

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

20303131002320 is a wasteful number, since it uses less digits than its factorization.

20303131002320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4788474359 (or 4788474353 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20303131002320 its reverse (2320013130302), we get a palindrome (22623144132622).

The spelling of 20303131002320 in words is "twenty trillion, three hundred three billion, one hundred thirty-one million, two thousand, three hundred twenty".