20011030331331 has 48 divisors (see below), whose sum is σ = 29186999552256. Its totient is φ = 12188721587328.

The previous prime is 20011030331323. The next prime is 20011030331339. The reversal of 20011030331331 is 13313303011002.

It is an interprime number because it is at equal distance from previous prime (20011030331323) and next prime (20011030331339).

It is not a de Polignac number, because 20011030331331 - 2³ = 20011030331323 is a prime.

It is a super-2 number, since 2×20011030331331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20011030331298 and 20011030331307.

It is not an unprimeable number, because it can be changed into a prime (20011030331339) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103666701 + ... + 103859553.

It is an arithmetic number, because the mean of its divisors is an integer number (608062490672).

Almost surely, 2^{20011030331331} is an apocalyptic number.

20011030331331 is a deficient number, since it is larger than the sum of its proper divisors (9175969220925).

20011030331331 is a wasteful number, since it uses less digits than its factorization.

20011030331331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194972 (or 194959 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 20011030331331 its reverse (13313303011002), we get a palindrome (33324333342333).

The spelling of 20011030331331 in words is "twenty trillion, eleven billion, thirty million, three hundred thirty-one thousand, three hundred thirty-one".