20311332211 has 2 divisors, whose sum is σ = 20311332212. Its totient is φ = 20311332210.

The previous prime is 20311332203. The next prime is 20311332241. The reversal of 20311332211 is 11223311302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20311332211 - 2³ = 20311332203 is a prime.

It is a super-3 number, since 3×20311332211³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (20311332241) 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, 10155666105 + 10155666106.

It is an arithmetic number, because the mean of its divisors is an integer number (10155666106).

Almost surely, 2^20311332211 is an apocalyptic number.

20311332211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311332211 is an equidigital number, since it uses as much as digits as its factorization.

20311332211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20311332211 its reverse (11223311302), we get a palindrome (31534643513).

The spelling of 20311332211 in words is "twenty billion, three hundred eleven million, three hundred thirty-two thousand, two hundred eleven".