20331313011 has 32 divisors (see below), whose sum is σ = 31624243200. Its totient is φ = 12891463200.

The previous prime is 20331312971. The next prime is 20331313031. The reversal of 20331313011 is 11031313302.

It is a happy number.

20331313011 is a `hidden beast` number, since 2 + 0 + 331 + 31 + 301 + 1 = 666.

It is not a de Polignac number, because 20331313011 - 2¹¹ = 20331310963 is a prime.

It is a super-2 number, since 2×20331313011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20331313031) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 141315 + ... + 246236.

It is an arithmetic number, because the mean of its divisors is an integer number (988257600).

Almost surely, 2^20331313011 is an apocalyptic number.

20331313011 is a deficient number, since it is larger than the sum of its proper divisors (11292930189).

20331313011 is a wasteful number, since it uses less digits than its factorization.

20331313011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387656 (or 387650 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 20331313011 its reverse (11031313302), we get a palindrome (31362626313).

The spelling of 20331313011 in words is "twenty billion, three hundred thirty-one million, three hundred thirteen thousand, eleven".