20633352331 has 2 divisors, whose sum is σ = 20633352332. Its totient is φ = 20633352330.

The previous prime is 20633352287. The next prime is 20633352373. The reversal of 20633352331 is 13325333602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20633352331 - 2¹⁹ = 20632828043 is a prime.

It is a super-2 number, since 2×20633352331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20633352293 and 20633352302.

It is not a weakly prime, because it can be changed into another prime (20633352391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10316676165 + 10316676166.

It is an arithmetic number, because the mean of its divisors is an integer number (10316676166).

Almost surely, 2^20633352331 is an apocalyptic number.

20633352331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20633352331 is an equidigital number, since it uses as much as digits as its factorization.

20633352331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 31.

Adding to 20633352331 its reverse (13325333602), we get a palindrome (33958685933).

The spelling of 20633352331 in words is "twenty billion, six hundred thirty-three million, three hundred fifty-two thousand, three hundred thirty-one".