20000031330320 has 40 divisors (see below), whose sum is σ = 46665553581720. Its totient is φ = 7971542727680.

The previous prime is 20000031330313. The next prime is 20000031330341. The reversal of 20000031330320 is 2303313000002.

It can be written as a sum of positive squares in 4 ways, for example, as 6088891834624 + 13911139495696 = 2467568^2 + 3729764^2 .

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

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, 444818075 + ... + 444863034.

It is an arithmetic number, because the mean of its divisors is an integer number (1166638839543).

Almost surely, 2^{20000031330320} is an apocalyptic number.

20000031330320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000031330320 is an abundant number, since it is smaller than the sum of its proper divisors (26665522251400).

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

20000031330320 is a wasteful number, since it uses less digits than its factorization.

20000031330320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889681403 (or 889681397 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 20000031330320 its reverse (2303313000002), we get a palindrome (22303344330322).

The spelling of 20000031330320 in words is "twenty trillion, thirty-one million, three hundred thirty thousand, three hundred twenty".