20311300189 has 2 divisors, whose sum is σ = 20311300190. Its totient is φ = 20311300188.

The previous prime is 20311300157. The next prime is 20311300211. The reversal of 20311300189 is 98100311302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18184522500 + 2126777689 = 134850^2 + 46117^2 .

It is a cyclic number.

It is not a de Polignac number, because 20311300189 - 2⁵ = 20311300157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20311300129) 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, 10155650094 + 10155650095.

It is an arithmetic number, because the mean of its divisors is an integer number (10155650095).

Almost surely, 2^20311300189 is an apocalyptic number.

It is an amenable number.

20311300189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311300189 is an equidigital number, since it uses as much as digits as its factorization.

20311300189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 20311300189 in words is "twenty billion, three hundred eleven million, three hundred thousand, one hundred eighty-nine".