1020111311587 has 2 divisors, whose sum is σ = 1020111311588. Its totient is φ = 1020111311586.

The previous prime is 1020111311581. The next prime is 1020111311693. The reversal of 1020111311587 is 7851131110201.

It is a weak prime.

It is an emirp because it is prime and its reverse (7851131110201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020111311587 - 2¹⁹ = 1020110787299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020111311581) 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, 510055655793 + 510055655794.

It is an arithmetic number, because the mean of its divisors is an integer number (510055655794).

Almost surely, 2^{1020111311587} is an apocalyptic number.

1020111311587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020111311587 is an equidigital number, since it uses as much as digits as its factorization.

1020111311587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 31.

Adding to 1020111311587 its reverse (7851131110201), we get a palindrome (8871242421788).

The spelling of 1020111311587 in words is "one trillion, twenty billion, one hundred eleven million, three hundred eleven thousand, five hundred eighty-seven".