1028273131103 has 4 divisors (see below), whose sum is σ = 1031579475888. Its totient is φ = 1024966786320.

The previous prime is 1028273131091. The next prime is 1028273131129. The reversal of 1028273131103 is 3011313728201.

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

It is a cyclic number.

It is not a de Polignac number, because 1028273131103 - 2⁸ = 1028273130847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1028273131103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028273133103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1653171926 + ... + 1653172547.

It is an arithmetic number, because the mean of its divisors is an integer number (257894868972).

Almost surely, 2^{1028273131103} is an apocalyptic number.

1028273131103 is a deficient number, since it is larger than the sum of its proper divisors (3306344785).

1028273131103 is an equidigital number, since it uses as much as digits as its factorization.

1028273131103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306344784.

The product of its (nonzero) digits is 6048, while the sum is 32.

Adding to 1028273131103 its reverse (3011313728201), we get a palindrome (4039586859304).

The spelling of 1028273131103 in words is "one trillion, twenty-eight billion, two hundred seventy-three million, one hundred thirty-one thousand, one hundred three".