20031322133 has 2 divisors, whose sum is σ = 20031322134. Its totient is φ = 20031322132.

The previous prime is 20031322099. The next prime is 20031322159. The reversal of 20031322133 is 33122313002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11173124209 + 8858197924 = 105703^2 + 94118^2 .

It is a cyclic number.

It is not a de Polignac number, because 20031322133 - 2²⁸ = 19762886677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20031322183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015661066 + 10015661067.

It is an arithmetic number, because the mean of its divisors is an integer number (10015661067).

Almost surely, 2^20031322133 is an apocalyptic number.

It is an amenable number.

20031322133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20031322133 is an equidigital number, since it uses as much as digits as its factorization.

20031322133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20031322133 its reverse (33122313002), we get a palindrome (53153635135).

The spelling of 20031322133 in words is "twenty billion, thirty-one million, three hundred twenty-two thousand, one hundred thirty-three".