20311142030293 has 2 divisors, whose sum is σ = 20311142030294. Its totient is φ = 20311142030292.

The previous prime is 20311142030233. The next prime is 20311142030303. The reversal of 20311142030293 is 39203024111302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17923724584164 + 2387417446129 = 4233642^2 + 1545127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20311142030293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20311142030203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155571015146 + 10155571015147.

It is an arithmetic number, because the mean of its divisors is an integer number (10155571015147).

Almost surely, 2^{20311142030293} is an apocalyptic number.

It is an amenable number.

20311142030293 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311142030293 is an equidigital number, since it uses as much as digits as its factorization.

20311142030293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

Adding to 20311142030293 its reverse (39203024111302), we get a palindrome (59514166141595).

The spelling of 20311142030293 in words is "twenty trillion, three hundred eleven billion, one hundred forty-two million, thirty thousand, two hundred ninety-three".