20320211113 has 2 divisors, whose sum is σ = 20320211114. Its totient is φ = 20320211112.

The previous prime is 20320211083. The next prime is 20320211117. The reversal of 20320211113 is 31111202302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18459841689 + 1860369424 = 135867^2 + 43132^2 .

It is a cyclic number.

It is not a de Polignac number, because 20320211113 - 2²⁵ = 20286656681 is a prime.

It is not a weakly prime, because it can be changed into another prime (20320211117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160105556 + 10160105557.

It is an arithmetic number, because the mean of its divisors is an integer number (10160105557).

Almost surely, 2^20320211113 is an apocalyptic number.

It is an amenable number.

20320211113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20320211113 is an equidigital number, since it uses as much as digits as its factorization.

20320211113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20320211113 its reverse (31111202302), we get a palindrome (51431413415).

The spelling of 20320211113 in words is "twenty billion, three hundred twenty million, two hundred eleven thousand, one hundred thirteen".