20001031133 has 12 divisors (see below), whose sum is σ = 20638461312. Its totient is φ = 19382598000.

The previous prime is 20001031069. The next prime is 20001031139. The reversal of 20001031133 is 33113010002.

It is not a de Polignac number, because 20001031133 - 2⁶ = 20001031069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001031139) 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 11 ways as a sum of consecutive naturals, for example, 314516 + ... + 372722.

It is an arithmetic number, because the mean of its divisors is an integer number (1719871776).

Almost surely, 2^20001031133 is an apocalyptic number.

It is an amenable number.

20001031133 is a deficient number, since it is larger than the sum of its proper divisors (637430179).

20001031133 is an equidigital number, since it uses as much as digits as its factorization.

20001031133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58532 (or 58495 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 20001031133 its reverse (33113010002), we get a palindrome (53114041135).

The spelling of 20001031133 in words is "twenty billion, one million, thirty-one thousand, one hundred thirty-three".