20311331244011 has 2 divisors, whose sum is σ = 20311331244012. Its totient is φ = 20311331244010.

The previous prime is 20311331243981. The next prime is 20311331244047. The reversal of 20311331244011 is 11044213311302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20311331244011 - 2²² = 20311327049707 is a prime.

It is not a weakly prime, because it can be changed into another prime (20311331264011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155665622005 + 10155665622006.

It is an arithmetic number, because the mean of its divisors is an integer number (10155665622006).

Almost surely, 2^{20311331244011} is an apocalyptic number.

20311331244011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311331244011 is an equidigital number, since it uses as much as digits as its factorization.

20311331244011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 20311331244011 its reverse (11044213311302), we get a palindrome (31355544555313).

The spelling of 20311331244011 in words is "twenty trillion, three hundred eleven billion, three hundred thirty-one million, two hundred forty-four thousand, eleven".