20311333112320 has 40 divisors (see below), whose sum is σ = 48699594788724. Its totient is φ = 8124533243904.

The previous prime is 20311333112299. The next prime is 20311333112321. The reversal of 20311333112320 is 2321133311302.

It can be written as a sum of positive squares in 2 ways, for example, as 18641531597056 + 1669801515264 = 4317584^2 + 1292208^2 .

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

It is a super-3 number, since 3×20311333112320³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20311333112321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3967054689 + ... + 3967059808.

Almost surely, 2^{20311333112320} is an apocalyptic number.

20311333112320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20311333112320 is an abundant number, since it is smaller than the sum of its proper divisors (28388261676404).

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

20311333112320 is an frugal number, since it uses more digits than its factorization.

20311333112320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7934114520 (or 7934114504 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 20311333112320 its reverse (2321133311302), we get a palindrome (22632466423622).

The spelling of 20311333112320 in words is "twenty trillion, three hundred eleven billion, three hundred thirty-three million, one hundred twelve thousand, three hundred twenty".