20001132331 has 2 divisors, whose sum is σ = 20001132332. Its totient is φ = 20001132330.

The previous prime is 20001132311. The next prime is 20001132341. The reversal of 20001132331 is 13323110002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20001132331 - 2⁵ = 20001132299 is a prime.

It is a super-2 number, since 2×20001132331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20001132311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000566165 + 10000566166.

It is an arithmetic number, because the mean of its divisors is an integer number (10000566166).

Almost surely, 2^20001132331 is an apocalyptic number.

20001132331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001132331 is an equidigital number, since it uses as much as digits as its factorization.

20001132331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20001132331 its reverse (13323110002), we get a palindrome (33324242333).

The spelling of 20001132331 in words is "twenty billion, one million, one hundred thirty-two thousand, three hundred thirty-one".