20033535331 has 2 divisors, whose sum is σ = 20033535332. Its totient is φ = 20033535330.

The previous prime is 20033535311. The next prime is 20033535377. The reversal of 20033535331 is 13353533002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20033535331 is a prime.

It is a super-2 number, since 2×20033535331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20033535331.

It is not a weakly prime, because it can be changed into another prime (20033535311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10016767665 + 10016767666.

It is an arithmetic number, because the mean of its divisors is an integer number (10016767666).

Almost surely, 2^20033535331 is an apocalyptic number.

20033535331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20033535331 is an equidigital number, since it uses as much as digits as its factorization.

20033535331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 28.

The spelling of 20033535331 in words is "twenty billion, thirty-three million, five hundred thirty-five thousand, three hundred thirty-one".