1020331105 has 4 divisors (see below), whose sum is σ = 1224397332. Its totient is φ = 816264880.

The previous prime is 1020331087. The next prime is 1020331111. The reversal of 1020331105 is 5011330201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 574656784 + 445674321 = 23972^2 + 21111^2 .

It is not a de Polignac number, because 1020331105 - 2⁹ = 1020330593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102033106 + ... + 102033115.

It is an arithmetic number, because the mean of its divisors is an integer number (306099333).

Almost surely, 2^1020331105 is an apocalyptic number.

It is an amenable number.

1020331105 is a deficient number, since it is larger than the sum of its proper divisors (204066227).

1020331105 is an equidigital number, since it uses as much as digits as its factorization.

1020331105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204066226.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1020331105 is about 31942.6220745887. The cubic root of 1020331105 is about 1006.7316186302.

Adding to 1020331105 its reverse (5011330201), we get a palindrome (6031661306).

The spelling of 1020331105 in words is "one billion, twenty million, three hundred thirty-one thousand, one hundred five".