20331110322013 has 2 divisors, whose sum is σ = 20331110322014. Its totient is φ = 20331110322012.

The previous prime is 20331110321999. The next prime is 20331110322041. The reversal of 20331110322013 is 31022301113302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10266468281689 + 10064642040324 = 3204133^2 + 3172482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20331110322013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20331110322053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165555161006 + 10165555161007.

It is an arithmetic number, because the mean of its divisors is an integer number (10165555161007).

Almost surely, 2^{20331110322013} is an apocalyptic number.

It is an amenable number.

20331110322013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331110322013 is an equidigital number, since it uses as much as digits as its factorization.

20331110322013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20331110322013 its reverse (31022301113302), we get a palindrome (51353411435315).

The spelling of 20331110322013 in words is "twenty trillion, three hundred thirty-one billion, one hundred ten million, three hundred twenty-two thousand, thirteen".