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1310031031103 = 19213926107157
BaseRepresentation
bin10011000100000011111…
…011110010101100111111
311122020102022111122000122
4103010003323302230333
5132430420420443403
62441453035245155
7163434535015124
oct23040373625477
94566368448018
101310031031103
11465643401343
12191a868a97bb
13966c635acc2
14475978a874b
15241248b2838
hex13103ef2b3f

1310031031103 has 12 divisors (see below), whose sum is σ = 1392555807720. Its totient is φ = 1232153334576.

The previous prime is 1310031031081. The next prime is 1310031031109. The reversal of 1310031031103 is 3011301300131.

It is not a de Polignac number, because 1310031031103 - 216 = 1310030965567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310031031109) 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 in 11 ways as a sum of consecutive naturals, for example, 13003400 + ... + 13103757.

It is an arithmetic number, because the mean of its divisors is an integer number (116046317310).

Almost surely, 21310031031103 is an apocalyptic number.

1310031031103 is a deficient number, since it is larger than the sum of its proper divisors (82524776617).

1310031031103 is a wasteful number, since it uses less digits than its factorization.

1310031031103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26107334 (or 26107315 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 17.

Adding to 1310031031103 its reverse (3011301300131), we get a palindrome (4321332331234).

The spelling of 1310031031103 in words is "one trillion, three hundred ten billion, thirty-one million, thirty-one thousand, one hundred three".

Divisors: 1 19 139 361 2641 50179 26107157 496035983 3628894823 9424683677 68949001637 1310031031103