20330031133 has 8 divisors (see below), whose sum is σ = 20382611256. Its totient is φ = 20277504000.

The previous prime is 20330031101. The next prime is 20330031143. The reversal of 20330031133 is 33113003302.

It can be written as a sum of positive squares in 4 ways, for example, as 5670391204 + 14659639929 = 75302^2 + 121077^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20330031133 - 2⁵ = 20330031101 is a prime.

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 20330031133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330031143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821935 + ... + 846307.

It is an arithmetic number, because the mean of its divisors is an integer number (2547826407).

Almost surely, 2^20330031133 is an apocalyptic number.

It is an amenable number.

20330031133 is a deficient number, since it is larger than the sum of its proper divisors (52580123).

20330031133 is a wasteful number, since it uses less digits than its factorization.

20330031133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26495.

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 20330031133 its reverse (33113003302), we get a palindrome (53443034435).

The spelling of 20330031133 in words is "twenty billion, three hundred thirty million, thirty-one thousand, one hundred thirty-three".