20031100101 has 24 divisors (see below), whose sum is σ = 29219991840. Its totient is φ = 13222119456.

The previous prime is 20031100087. The next prime is 20031100109. The reversal of 20031100101 is 10100113002.

It is not a de Polignac number, because 20031100101 - 2²¹ = 20029002949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031100109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2248011 + ... + 2256903.

It is an arithmetic number, because the mean of its divisors is an integer number (1217499660).

Almost surely, 2^20031100101 is an apocalyptic number.

It is an amenable number.

20031100101 is a deficient number, since it is larger than the sum of its proper divisors (9188891739).

20031100101 is a wasteful number, since it uses less digits than its factorization.

20031100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11345 (or 11342 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 20031100101 its reverse (10100113002), we get a palindrome (30131213103).

The spelling of 20031100101 in words is "twenty billion, thirty-one million, one hundred thousand, one hundred one".