20104311133 has 4 divisors (see below), whose sum is σ = 20107892128. Its totient is φ = 20100730140.

The previous prime is 20104311119. The next prime is 20104311137. The reversal of 20104311133 is 33111340102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20104311133 - 2⁹ = 20104310621 is a prime.

It is a super-2 number, since 2×20104311133² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20104311133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104311137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1782063 + ... + 1793308.

It is an arithmetic number, because the mean of its divisors is an integer number (5026973032).

Almost surely, 2^20104311133 is an apocalyptic number.

It is an amenable number.

20104311133 is a deficient number, since it is larger than the sum of its proper divisors (3580995).

20104311133 is an equidigital number, since it uses as much as digits as its factorization.

20104311133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580994.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20104311133 its reverse (33111340102), we get a palindrome (53215651235).

The spelling of 20104311133 in words is "twenty billion, one hundred four million, three hundred eleven thousand, one hundred thirty-three".