20346311310187 has 2 divisors, whose sum is σ = 20346311310188. Its totient is φ = 20346311310186.

The previous prime is 20346311310173. The next prime is 20346311310317. The reversal of 20346311310187 is 78101311364302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20346311310187 - 2¹¹ = 20346311308139 is a prime.

It is not a weakly prime, because it can be changed into another prime (20346311610187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173155655093 + 10173155655094.

It is an arithmetic number, because the mean of its divisors is an integer number (10173155655094).

Almost surely, 2^{20346311310187} is an apocalyptic number.

20346311310187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346311310187 is an equidigital number, since it uses as much as digits as its factorization.

20346311310187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

Adding to 20346311310187 its reverse (78101311364302), we get a palindrome (98447622674489).

The spelling of 20346311310187 in words is "twenty trillion, three hundred forty-six billion, three hundred eleven million, three hundred ten thousand, one hundred eighty-seven".