20001311033 has 16 divisors (see below), whose sum is σ = 22096863936. Its totient is φ = 17952253440.

The previous prime is 20001311009. The next prime is 20001311069. The reversal of 20001311033 is 33011310002.

It is not a de Polignac number, because 20001311033 - 2⁶ = 20001310969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20001310999 and 20001311017.

It is not an unprimeable number, because it can be changed into a prime (20001311093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1594241 + ... + 1606737.

It is an arithmetic number, because the mean of its divisors is an integer number (1381053996).

Almost surely, 2^20001311033 is an apocalyptic number.

It is an amenable number.

20001311033 is a deficient number, since it is larger than the sum of its proper divisors (2095552903).

20001311033 is a wasteful number, since it uses less digits than its factorization.

20001311033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14344.

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

Adding to 20001311033 its reverse (33011310002), we get a palindrome (53012621035).

The spelling of 20001311033 in words is "twenty billion, one million, three hundred eleven thousand, thirty-three".