20311192193 has 2 divisors, whose sum is σ = 20311192194. Its totient is φ = 20311192192.

The previous prime is 20311192189. The next prime is 20311192229. The reversal of 20311192193 is 39129111302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14033482369 + 6277709824 = 118463^2 + 79232^2 .

It is a cyclic number.

It is not a de Polignac number, because 20311192193 - 2² = 20311192189 is a prime.

It is not a weakly prime, because it can be changed into another prime (20311192103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155596096 + 10155596097.

It is an arithmetic number, because the mean of its divisors is an integer number (10155596097).

Almost surely, 2^20311192193 is an apocalyptic number.

It is an amenable number.

20311192193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311192193 is an equidigital number, since it uses as much as digits as its factorization.

20311192193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 20311192193 in words is "twenty billion, three hundred eleven million, one hundred ninety-two thousand, one hundred ninety-three".