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103123144423 = 131719434391301
BaseRepresentation
bin110000000001010011…
…1100100111011100111
3100212011211101111222101
41200002213210323213
53142144011110143
6115212450512531
710310326156555
oct1400247447347
9325154344871
10103123144423
113a8093657a2
1217b9b895747
13995587c1b0
144dc3b60bd5
152a38505b4d
hex18029e4ee7

103123144423 has 64 divisors (see below), whose sum is σ = 127041868800. Its totient is φ = 82649548800.

The previous prime is 103123144373. The next prime is 103123144427. The reversal of 103123144423 is 324441321301.

It is a happy number.

It is not a de Polignac number, because 103123144423 - 233 = 94533209831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103123144391 and 103123144400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103123144427) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 79263873 + ... + 79265173.

It is an arithmetic number, because the mean of its divisors is an integer number (1985029200).

Almost surely, 2103123144423 is an apocalyptic number.

103123144423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

103123144423 is a deficient number, since it is larger than the sum of its proper divisors (23918724377).

103123144423 is a wasteful number, since it uses less digits than its factorization.

103123144423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 103123144423 its reverse (324441321301), we get a palindrome (427564465724).

The spelling of 103123144423 in words is "one hundred three billion, one hundred twenty-three million, one hundred forty-four thousand, four hundred twenty-three".

Divisors: 1 13 17 19 43 221 247 323 439 559 731 817 1301 4199 5707 7463 8341 9503 10621 13889 16913 18877 22117 24719 55943 97019 108433 141797 180557 245401 287521 320909 321347 358663 420223 571139 727259 951031 1062917 1843361 4171817 4662619 5462899 6097271 7424807 9709363 10851641 12363403 13817921 18069589 24558977 79264523 126221719 141071333 184477897 234904657 319266701 417502609 466620563 2398212661 5427533917 6066067319 7932549571 103123144423