20001100331 has 8 divisors (see below), whose sum is σ = 20127720000. Its totient is φ = 19874528712.

The previous prime is 20001100309. The next prime is 20001100349. The reversal of 20001100331 is 13300110002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-20001100331 is a prime.

It is a super-2 number, since 2×20001100331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001100391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214156 + ... + 1230518.

It is an arithmetic number, because the mean of its divisors is an integer number (2515965000).

Almost surely, 2^20001100331 is an apocalyptic number.

20001100331 is a deficient number, since it is larger than the sum of its proper divisors (126619669).

20001100331 is a wasteful number, since it uses less digits than its factorization.

20001100331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24025.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 20001100331 its reverse (13300110002), we get a palindrome (33301210333).

The spelling of 20001100331 in words is "twenty billion, one million, one hundred thousand, three hundred thirty-one".